125057911 has 4 divisors (see below), whose sum is σ = 136426824. Its totient is φ = 113689000.

The previous prime is 125057903. The next prime is 125057921. The reversal of 125057911 is 119750521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125057911 - 2³ = 125057903 is a prime.

It is a super-2 number, since 2×125057911² = 31278962207367842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125057921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5684440 + ... + 5684461.

It is an arithmetic number, because the mean of its divisors is an integer number (34106706).

Almost surely, 2^125057911 is an apocalyptic number.

125057911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125057911 is a deficient number, since it is larger than the sum of its proper divisors (11368913).

125057911 is a wasteful number, since it uses less digits than its factorization.

125057911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11368912.

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 125057911 is about 11182.9294462587. The cubic root of 125057911 is about 500.0772027455.

The spelling of 125057911 in words is "one hundred twenty-five million, fifty-seven thousand, nine hundred eleven".