15855154361025 has 144 divisors (see below), whose sum is σ = 32660409600000. Its totient is φ = 6629810584320.

The previous prime is 15855154360993. The next prime is 15855154361027. The reversal of 15855154361025 is 52016345155851.

It is not a de Polignac number, because 15855154361025 - 2⁵ = 15855154360993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15855154361027) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7443976 + ... + 9333974.

It is an arithmetic number, because the mean of its divisors is an integer number (226808400000).

Almost surely, 2^{15855154361025} is an apocalyptic number.

15855154361025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15855154361025 is an abundant number, since it is smaller than the sum of its proper divisors (16805255238975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15855154361025 is a wasteful number, since it uses less digits than its factorization.

15855154361025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890096 (or 1890062 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 51.

The spelling of 15855154361025 in words is "fifteen trillion, eight hundred fifty-five billion, one hundred fifty-four million, three hundred sixty-one thousand, twenty-five".