125157213 has 12 divisors (see below), whose sum is σ = 191417148. Its totient is φ = 78529920.

The previous prime is 125157181. The next prime is 125157217. The reversal of 125157213 is 312751521.

It can be written as a sum of positive squares in 2 ways, for example, as 103978809 + 21178404 = 10197^2 + 4602^2 .

It is not a de Polignac number, because 125157213 - 2⁵ = 125157181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125157217) 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, 408858 + ... + 409163.

It is an arithmetic number, because the mean of its divisors is an integer number (15951429).

Almost surely, 2^125157213 is an apocalyptic number.

It is an amenable number.

125157213 is a deficient number, since it is larger than the sum of its proper divisors (66259935).

125157213 is a wasteful number, since it uses less digits than its factorization.

125157213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818044 (or 818041 counting only the distinct ones).

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

The square root of 125157213 is about 11187.3684573272. The cubic root of 125157213 is about 500.2095295158.

The spelling of 125157213 in words is "one hundred twenty-five million, one hundred fifty-seven thousand, two hundred thirteen".