25391279038875 has 16 divisors (see below), whose sum is σ = 42251088321312. Its totient is φ = 13542015487200.

The previous prime is 25391279038789. The next prime is 25391279038889. The reversal of 25391279038875 is 57883097219352.

It is not a de Polignac number, because 25391279038875 - 2²² = 25391274844571 is a prime.

It is a super-2 number, since 2×25391279038875² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33855038344 + ... + 33855039093.

It is an arithmetic number, because the mean of its divisors is an integer number (2640693020082).

Almost surely, 2^{25391279038875} is an apocalyptic number.

25391279038875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25391279038875 is a deficient number, since it is larger than the sum of its proper divisors (16859809282437).

25391279038875 is an equidigital number, since it uses as much as digits as its factorization.

25391279038875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67710077455 (or 67710077445 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 69.

The spelling of 25391279038875 in words is "twenty-five trillion, three hundred ninety-one billion, two hundred seventy-nine million, thirty-eight thousand, eight hundred seventy-five".