25894876765 has 32 divisors (see below), whose sum is σ = 34296514560. Its totient is φ = 18681062400.

The previous prime is 25894876759. The next prime is 25894876771. The reversal of 25894876765 is 56767849852.

It is an interprime number because it is at equal distance from previous prime (25894876759) and next prime (25894876771).

It is not a de Polignac number, because 25894876765 - 2³ = 25894876757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25894876765.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 282820 + ... + 363010.

It is an arithmetic number, because the mean of its divisors is an integer number (1071766080).

Almost surely, 2^25894876765 is an apocalyptic number.

It is an amenable number.

25894876765 is a deficient number, since it is larger than the sum of its proper divisors (8401637795).

25894876765 is a wasteful number, since it uses less digits than its factorization.

25894876765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80373.

The product of its digits is 203212800, while the sum is 67.

The spelling of 25894876765 in words is "twenty-five billion, eight hundred ninety-four million, eight hundred seventy-six thousand, seven hundred sixty-five".