115155515020025 has 12 divisors (see below), whose sum is σ = 142854044371692. Its totient is φ = 92084924437440.

The previous prime is 115155515020001. The next prime is 115155515020027. The reversal of 115155515020025 is 520020515551511.

It can be written as a sum of positive squares in 6 ways, for example, as 242517836521 + 114912997183504 = 492461^2 + 10719748^2 .

It is not a de Polignac number, because 115155515020025 - 2¹⁶ = 115155514954489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115155515020027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 987129974 + ... + 987246623.

It is an arithmetic number, because the mean of its divisors is an integer number (11904503697641).

Almost surely, 2^{115155515020025} is an apocalyptic number.

It is an amenable number.

115155515020025 is a deficient number, since it is larger than the sum of its proper divisors (27698529351667).

115155515020025 is a wasteful number, since it uses less digits than its factorization.

115155515020025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974378940 (or 1974378935 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 38.

The spelling of 115155515020025 in words is "one hundred fifteen trillion, one hundred fifty-five billion, five hundred fifteen million, twenty thousand, twenty-five".