125129877 has 32 divisors (see below), whose sum is σ = 187038720. Its totient is φ = 73946880.

The previous prime is 125129863. The next prime is 125129897. The reversal of 125129877 is 778921521.

It is not a de Polignac number, because 125129877 - 2⁷ = 125129749 is a prime.

It is a super-2 number, since 2×125129877² = 31314972236070258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125129897) 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, 254602 + ... + 255092.

It is an arithmetic number, because the mean of its divisors is an integer number (5844960).

Almost surely, 2^125129877 is an apocalyptic number.

125129877 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

125129877 is a deficient number, since it is larger than the sum of its proper divisors (61908843).

125129877 is a wasteful number, since it uses less digits than its factorization.

125129877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its digits is 70560, while the sum is 42.

The square root of 125129877 is about 11186.1466555736. The cubic root of 125129877 is about 500.1731093927.

The spelling of 125129877 in words is "one hundred twenty-five million, one hundred twenty-nine thousand, eight hundred seventy-seven".