25664470 has 16 divisors (see below), whose sum is σ = 49749840. Its totient is φ = 9476064.

The previous prime is 25664453. The next prime is 25664477. The reversal of 25664470 is 7446652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25664477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98580 + ... + 98839.

It is an arithmetic number, because the mean of its divisors is an integer number (3109365).

Almost surely, 2^25664470 is an apocalyptic number.

25664470 is a deficient number, since it is larger than the sum of its proper divisors (24085370).

25664470 is a wasteful number, since it uses less digits than its factorization.

25664470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197439.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 25664470 is about 5066.0112514680. The cubic root of 25664470 is about 294.9697182361.

The spelling of 25664470 in words is "twenty-five million, six hundred sixty-four thousand, four hundred seventy".