7900825 has 6 divisors (see below), whose sum is σ = 9797054. Its totient is φ = 6320640.

The previous prime is 7900817. The next prime is 7900829. The reversal of 7900825 is 5280097.

It can be written as a sum of positive squares in 3 ways, for example, as 659344 + 7241481 = 812^2 + 2691^2 .

It is not a de Polignac number, because 7900825 - 2³ = 7900817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7900829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157992 + ... + 158041.

Almost surely, 2^7900825 is an apocalyptic number.

It is an amenable number.

7900825 is a deficient number, since it is larger than the sum of its proper divisors (1896229).

7900825 is a wasteful number, since it uses less digits than its factorization.

7900825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316043 (or 316038 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 7900825 is about 2810.8406215935. The cubic root of 7900825 is about 199.1701027828.

The spelling of 7900825 in words is "seven million, nine hundred thousand, eight hundred twenty-five".