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7490825 = 52973089
BaseRepresentation
bin11100100100110100001001
3112002120110222
4130210310021
53404201300
6424315425
7120446066
oct34446411
915076428
107490825
114256a71
122612b75
131723754
14dcdc6d
159ce785
hex724d09

7490825 has 12 divisors (see below), whose sum is σ = 9387420. Its totient is φ = 5928960.

The previous prime is 7490803. The next prime is 7490827. The reversal of 7490825 is 5280947.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 48841 + 7441984 = 221^2 + 2728^2 .

It is not a de Polignac number, because 7490825 - 212 = 7486729 is a prime.

It is a super-2 number, since 2×74908252 = 112224918361250, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7490827) 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, 881 + ... + 3969.

It is an arithmetic number, because the mean of its divisors is an integer number (782285).

Almost surely, 27490825 is an apocalyptic number.

It is an amenable number.

7490825 is a deficient number, since it is larger than the sum of its proper divisors (1896595).

7490825 is a wasteful number, since it uses less digits than its factorization.

7490825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196 (or 3191 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 7490825 is about 2736.9371567502. The cubic root of 7490825 is about 195.6635296862.

The spelling of 7490825 in words is "seven million, four hundred ninety thousand, eight hundred twenty-five".

Divisors: 1 5 25 97 485 2425 3089 15445 77225 299633 1498165 7490825