125107042170531 has 16 divisors (see below), whose sum is σ = 168069225671424. Its totient is φ = 82776330163104.

The previous prime is 125107042170479. The next prime is 125107042170589. The reversal of 125107042170531 is 135071240701521.

It is not a de Polignac number, because 125107042170531 - 2⁷ = 125107042170403 is a prime.

It is a super-2 number, since 2×125107042170531² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125107042170531.

It is not an unprimeable number, because it can be changed into a prime (125107042170031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193857216 + ... + 194501501.

It is an arithmetic number, because the mean of its divisors is an integer number (10504326604464).

Almost surely, 2^{125107042170531} is an apocalyptic number.

125107042170531 is a deficient number, since it is larger than the sum of its proper divisors (42962183500893).

125107042170531 is a wasteful number, since it uses less digits than its factorization.

125107042170531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388359530.

The product of its (nonzero) digits is 58800, while the sum is 39.

The spelling of 125107042170531 in words is "one hundred twenty-five trillion, one hundred seven billion, forty-two million, one hundred seventy thousand, five hundred thirty-one".