25764720487 has 16 divisors (see below), whose sum is σ = 28606740480. Its totient is φ = 23007045600.

The previous prime is 25764720479. The next prime is 25764720493. The reversal of 25764720487 is 78402746752.

It is not a de Polignac number, because 25764720487 - 2³ = 25764720479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25764720587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472714 + ... + 524392.

It is an arithmetic number, because the mean of its divisors is an integer number (1787921280).

Almost surely, 2^25764720487 is an apocalyptic number.

25764720487 is a deficient number, since it is larger than the sum of its proper divisors (2842019993).

25764720487 is a wasteful number, since it uses less digits than its factorization.

25764720487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52494.

The product of its (nonzero) digits is 5268480, while the sum is 52.

The spelling of 25764720487 in words is "twenty-five billion, seven hundred sixty-four million, seven hundred twenty thousand, four hundred eighty-seven".