25255891515154 has 32 divisors (see below), whose sum is σ = 42224236778880. Its totient is φ = 11259388530432.

The previous prime is 25255891515149. The next prime is 25255891515191. The reversal of 25255891515154 is 45151519855252.

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, 38657632 + ... + 39305524.

It is an arithmetic number, because the mean of its divisors is an integer number (1319507399340).

Almost surely, 2^{25255891515154} is an apocalyptic number.

25255891515154 is a deficient number, since it is larger than the sum of its proper divisors (16968345263726).

25255891515154 is a wasteful number, since it uses less digits than its factorization.

25255891515154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708274.

The product of its digits is 18000000, while the sum is 58.

The spelling of 25255891515154 in words is "twenty-five trillion, two hundred fifty-five billion, eight hundred ninety-one million, five hundred fifteen thousand, one hundred fifty-four".