125271513 has 12 divisors (see below), whose sum is σ = 185156400. Its totient is φ = 81571896.

The previous prime is 125271499. The next prime is 125271533. The reversal of 125271513 is 315172521.

125271513 is a `hidden beast` number, since 125 + 27 + 1 + 513 = 666.

It is not a de Polignac number, because 125271513 - 2⁵ = 125271481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125271533) 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, 161463 + ... + 162236.

It is an arithmetic number, because the mean of its divisors is an integer number (15429700).

Almost surely, 2^125271513 is an apocalyptic number.

It is an amenable number.

125271513 is a deficient number, since it is larger than the sum of its proper divisors (59884887).

125271513 is a wasteful number, since it uses less digits than its factorization.

125271513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323748 (or 323745 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 125271513 is about 11192.4757314903. The cubic root of 125271513 is about 500.3617555361.

The spelling of 125271513 in words is "one hundred twenty-five million, two hundred seventy-one thousand, five hundred thirteen".