25251967136 has 48 divisors (see below), whose sum is σ = 54630313920. Its totient is φ = 11394362880.

The previous prime is 25251967133. The next prime is 25251967187. The reversal of 25251967136 is 63176915252.

It is not an unprimeable number, because it can be changed into a prime (25251967133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213596 + ... + 310043.

It is an arithmetic number, because the mean of its divisors is an integer number (1138131540).

Almost surely, 2^25251967136 is an apocalyptic number.

It is an amenable number.

25251967136 is an abundant number, since it is smaller than the sum of its proper divisors (29378346784).

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

25251967136 is a wasteful number, since it uses less digits than its factorization.

25251967136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523797 (or 523789 counting only the distinct ones).

The product of its digits is 680400, while the sum is 47.

The spelling of 25251967136 in words is "twenty-five billion, two hundred fifty-one million, nine hundred sixty-seven thousand, one hundred thirty-six".