7920925 has 12 divisors (see below), whose sum is σ = 9922356. Its totient is φ = 6272000.

The previous prime is 7920893. The next prime is 7920949. The reversal of 7920925 is 5290297.

It can be written as a sum of positive squares in 6 ways, for example, as 1996569 + 5924356 = 1413^2 + 2434^2 .

It is not a de Polignac number, because 7920925 - 2⁵ = 7920893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 957 + ... + 4093.

It is an arithmetic number, because the mean of its divisors is an integer number (826863).

Almost surely, 2^7920925 is an apocalyptic number.

It is an amenable number.

7920925 is a deficient number, since it is larger than the sum of its proper divisors (2001431).

7920925 is a wasteful number, since it uses less digits than its factorization.

7920925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248 (or 3243 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 7920925 is about 2814.4137933147. The cubic root of 7920925 is about 199.3388585347.

The spelling of 7920925 in words is "seven million, nine hundred twenty thousand, nine hundred twenty-five".