25120125155 has 4 divisors (see below), whose sum is σ = 30144150192. Its totient is φ = 20096100120.

The previous prime is 25120125091. The next prime is 25120125167. The reversal of 25120125155 is 55152102152.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25120125155 - 2⁶ = 25120125091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512012511 + ... + 2512012520.

It is an arithmetic number, because the mean of its divisors is an integer number (7536037548).

Almost surely, 2^25120125155 is an apocalyptic number.

25120125155 is a deficient number, since it is larger than the sum of its proper divisors (5024025037).

25120125155 is an equidigital number, since it uses as much as digits as its factorization.

25120125155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024025036.

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 25120125155 in words is "twenty-five billion, one hundred twenty million, one hundred twenty-five thousand, one hundred fifty-five".