25745676731 has 8 divisors (see below), whose sum is σ = 26739231744. Its totient is φ = 24762312360.

The previous prime is 25745676713. The next prime is 25745676757. The reversal of 25745676731 is 13767654752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25745676731 - 2²⁶ = 25678567867 is a prime.

It is a super-2 number, since 2×25745676731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25745676031) 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, 2542511 + ... + 2552616.

It is an arithmetic number, because the mean of its divisors is an integer number (3342403968).

Almost surely, 2^25745676731 is an apocalyptic number.

25745676731 is a deficient number, since it is larger than the sum of its proper divisors (993555013).

25745676731 is a wasteful number, since it uses less digits than its factorization.

25745676731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5095321.

The product of its digits is 7408800, while the sum is 53.

The spelling of 25745676731 in words is "twenty-five billion, seven hundred forty-five million, six hundred seventy-six thousand, seven hundred thirty-one".