25697004 has 12 divisors (see below), whose sum is σ = 59959704. Its totient is φ = 8565664.

The previous prime is 25696999. The next prime is 25697011. The reversal of 25697004 is 40079652.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070697 + ... + 1070720.

It is an arithmetic number, because the mean of its divisors is an integer number (4996642).

Almost surely, 2^25697004 is an apocalyptic number.

It is an amenable number.

25697004 is an abundant number, since it is smaller than the sum of its proper divisors (34262700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25697004 is a wasteful number, since it uses less digits than its factorization.

25697004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141424 (or 2141422 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 25697004 is about 5069.2212419661. The cubic root of 25697004 is about 295.0943067248.

The spelling of 25697004 in words is "twenty-five million, six hundred ninety-seven thousand, four".