20125101258 has 12 divisors (see below), whose sum is σ = 43604386098. Its totient is φ = 6708367080.

The previous prime is 20125101253. The next prime is 20125101281. The reversal of 20125101258 is 85210152102.

It is a happy number.

20125101258 is a `hidden beast` number, since 20 + 1 + 2 + 510 + 125 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13382556489 + 6742544769 = 115683^2 + 82113^2 .

It is not an unprimeable number, because it can be changed into a prime (20125101251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 559030573 + ... + 559030608.

Almost surely, 2^20125101258 is an apocalyptic number.

20125101258 is an abundant number, since it is smaller than the sum of its proper divisors (23479284840).

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

20125101258 is a wasteful number, since it uses less digits than its factorization.

20125101258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118061189 (or 1118061186 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The spelling of 20125101258 in words is "twenty billion, one hundred twenty-five million, one hundred one thousand, two hundred fifty-eight".