25696864102 has 24 divisors (see below), whose sum is σ = 48287516256. Its totient is φ = 10165791888.

The previous prime is 25696864033. The next prime is 25696864133. The reversal of 25696864102 is 20146869652.

It is a Harshad number since it is a multiple of its sum of digits (49).

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, 10083838 + ... + 10086385.

It is an arithmetic number, because the mean of its divisors is an integer number (2011979844).

Almost surely, 2^25696864102 is an apocalyptic number.

25696864102 is a deficient number, since it is larger than the sum of its proper divisors (22590652154).

25696864102 is a wasteful number, since it uses less digits than its factorization.

25696864102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20170252 (or 20170245 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 25696864102 in words is "twenty-five billion, six hundred ninety-six million, eight hundred sixty-four thousand, one hundred two".