25257404764 has 24 divisors (see below), whose sum is σ = 46808169408. Its totient is φ = 11883886080.

The previous prime is 25257404761. The next prime is 25257404819. The reversal of 25257404764 is 46740475252.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25257404761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439624 + ... + 493744.

It is an arithmetic number, because the mean of its divisors is an integer number (1950340392).

Almost surely, 2^25257404764 is an apocalyptic number.

It is an amenable number.

25257404764 is a deficient number, since it is larger than the sum of its proper divisors (21550764644).

25257404764 is a wasteful number, since it uses less digits than its factorization.

25257404764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61005 (or 61003 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 46.

The spelling of 25257404764 in words is "twenty-five billion, two hundred fifty-seven million, four hundred four thousand, seven hundred sixty-four".