125131381251 has 16 divisors (see below), whose sum is σ = 178801131264. Its totient is φ = 77637330144.

The previous prime is 125131381241. The next prime is 125131381253. The reversal of 125131381251 is 152183131521.

It is not a de Polignac number, because 125131381251 - 2¹⁴ = 125131364867 is a prime.

It is a super-2 number, since 2×125131381251² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125131381253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24504181 + ... + 24509286.

It is an arithmetic number, because the mean of its divisors is an integer number (11175070704).

Almost surely, 2^125131381251 is an apocalyptic number.

125131381251 is a deficient number, since it is larger than the sum of its proper divisors (53669750013).

125131381251 is a wasteful number, since it uses less digits than its factorization.

125131381251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49013530.

The product of its digits is 7200, while the sum is 33.

The spelling of 125131381251 in words is "one hundred twenty-five billion, one hundred thirty-one million, three hundred eighty-one thousand, two hundred fifty-one".