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7525 = 52743
BaseRepresentation
bin1110101100101
3101022201
41311211
5220100
654501
730640
oct16545
911281
107525
115721
124431
13356b
142a57
15236a
hex1d65

7525 has 12 divisors (see below), whose sum is σ = 10912. Its totient is φ = 5040.

The previous prime is 7523. The next prime is 7529. The reversal of 7525 is 5257.

Adding to 7525 its product of digits (350), we get a triangular number (7875 = T125).

It can be divided in two parts, 752 and 5, that added together give a palindrome (757).

It is a happy number.

7525 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7525 - 21 = 7523 is a prime.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a plaindrome in base 13 and base 15.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154 + ... + 196.

27525 is an apocalyptic number.

It is an amenable number.

7525 is a deficient number, since it is larger than the sum of its proper divisors (3387).

7525 is a wasteful number, since it uses less digits than its factorization.

7525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 55 counting only the distinct ones).

The product of its digits is 350, while the sum is 19.

The square root of 7525 is about 86.7467578645. The cubic root of 7525 is about 19.5960633493.

The spelling of 7525 in words is "seven thousand, five hundred twenty-five".

Divisors: 1 5 7 25 35 43 175 215 301 1075 1505 7525