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7425 = 335211
BaseRepresentation
bin1110100000001
3101012000
41310001
5214200
654213
730435
oct16401
911160
107425
115640
124369
1334c2
1429c5
152300
hex1d01

7425 has 24 divisors (see below), whose sum is σ = 14880. Its totient is φ = 3600.

The previous prime is 7417. The next prime is 7433. The reversal of 7425 is 5247.

It can be divided in two parts, 742 and 5, that added together give a palindrome (747).

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7417) and next prime (7433).

7425 is an admirable number.

It is not a de Polignac number, because 7425 - 23 = 7417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7398 and 7407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 670 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (620).

It is a Proth number, since it is equal to 29 ⋅ 28 + 1 and 29 < 28.

27425 is an apocalyptic number.

7425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7425 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7440).

7425 is a wasteful number, since it uses less digits than its factorization.

7425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30 (or 19 counting only the distinct ones).

The product of its digits is 280, while the sum is 18.

The square root of 7425 is about 86.1684396981. The cubic root of 7425 is about 19.5088717028.

The spelling of 7425 in words is "seven thousand, four hundred twenty-five".

Divisors: 1 3 5 9 11 15 25 27 33 45 55 75 99 135 165 225 275 297 495 675 825 1485 2475 7425