125138697 has 16 divisors (see below), whose sum is σ = 169264512. Its totient is φ = 82227200.

The previous prime is 125138687. The next prime is 125138737. The reversal of 125138697 is 796831521.

It is a cyclic number.

It is not a de Polignac number, because 125138697 - 2⁴ = 125138681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125138687) 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, 77068 + ... + 78674.

It is an arithmetic number, because the mean of its divisors is an integer number (10579032).

Almost surely, 2^125138697 is an apocalyptic number.

It is an amenable number.

125138697 is a deficient number, since it is larger than the sum of its proper divisors (44125815).

125138697 is a wasteful number, since it uses less digits than its factorization.

125138697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968.

The product of its digits is 90720, while the sum is 42.

The square root of 125138697 is about 11186.5408862615. The cubic root of 125138697 is about 500.1848609777.

The spelling of 125138697 in words is "one hundred twenty-five million, one hundred thirty-eight thousand, six hundred ninety-seven".