25811872575 has 24 divisors (see below), whose sum is σ = 42982665600. Its totient is φ = 13667288160.

The previous prime is 25811872517. The next prime is 25811872579. The reversal of 25811872575 is 57527811852.

It is not a de Polignac number, because 25811872575 - 2¹⁰ = 25811871551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25811872579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1227555 + ... + 1248404.

It is an arithmetic number, because the mean of its divisors is an integer number (1790944400).

Almost surely, 2^25811872575 is an apocalyptic number.

25811872575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25811872575 is a deficient number, since it is larger than the sum of its proper divisors (17170793025).

25811872575 is a wasteful number, since it uses less digits than its factorization.

25811872575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476111 (or 2476106 counting only the distinct ones).

The product of its digits is 1568000, while the sum is 51.

The spelling of 25811872575 in words is "twenty-five billion, eight hundred eleven million, eight hundred seventy-two thousand, five hundred seventy-five".