125133610131 has 32 divisors (see below), whose sum is σ = 192687505920. Its totient is φ = 80189769312.

The previous prime is 125133610099. The next prime is 125133610187. The reversal of 125133610131 is 131016331521.

It is a happy number.

125133610131 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 33 + 610 + 13 + 1 = 666.

It is not a de Polignac number, because 125133610131 - 2⁵ = 125133610099 is a prime.

It is a super-2 number, since 2×125133610131² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 125133610095 and 125133610104.

It is not an unprimeable number, because it can be changed into a prime (125133618131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671655 + ... + 837488.

It is an arithmetic number, because the mean of its divisors is an integer number (6021484560).

Almost surely, 2^125133610131 is an apocalyptic number.

125133610131 is a deficient number, since it is larger than the sum of its proper divisors (67553895789).

125133610131 is a wasteful number, since it uses less digits than its factorization.

125133610131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509272 (or 1509266 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

Adding to 125133610131 its reverse (131016331521), we get a palindrome (256149941652).

The spelling of 125133610131 in words is "one hundred twenty-five billion, one hundred thirty-three million, six hundred ten thousand, one hundred thirty-one".