904084625 has 16 divisors (see below), whose sum is σ = 1131258960. Its totient is φ = 721369600.

The previous prime is 904084549. The next prime is 904084627. The reversal of 904084625 is 526480409.

It is a Cunningham number, because it is equal to 30068²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 378574849 + 525509776 = 19457^2 + 22924^2 .

It is not a de Polignac number, because 904084625 - 2⁸ = 904084369 is a prime.

It is a super-2 number, since 2×904084625² = 1634738018322781250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (904084627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39329 + ... + 57921.

It is an arithmetic number, because the mean of its divisors is an integer number (70703685).

Almost surely, 2^904084625 is an apocalyptic number.

It is an amenable number.

904084625 is a deficient number, since it is larger than the sum of its proper divisors (227174335).

904084625 is a wasteful number, since it uses less digits than its factorization.

904084625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18997 (or 18987 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 904084625 is about 30068.0000166290. Note that the first 4 decimals coincide. The cubic root of 904084625 is about 966.9477960901.

The spelling of 904084625 in words is "nine hundred four million, eighty-four thousand, six hundred twenty-five".