25155855152 has 20 divisors (see below), whose sum is σ = 48868081320. Its totient is φ = 12544737408.

The previous prime is 25155855143. The next prime is 25155855157.

25155855152 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (25155855157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068133 + ... + 2080260.

It is an arithmetic number, because the mean of its divisors is an integer number (2443404066).

Almost surely, 2^25155855152 is an apocalyptic number.

It is an amenable number.

25155855152 is a deficient number, since it is larger than the sum of its proper divisors (23712226168).

25155855152 is a wasteful number, since it uses less digits than its factorization.

25155855152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148780 (or 4148774 counting only the distinct ones).

The product of its digits is 500000, while the sum is 44.

Subtracting from 25155855152 its product of digits (500000), we obtain a palindrome (25155355152).

The spelling of 25155855152 in words is "twenty-five billion, one hundred fifty-five million, eight hundred fifty-five thousand, one hundred fifty-two".