125531879 has 8 divisors (see below), whose sum is σ = 144151680. Its totient is φ = 108113400.

The previous prime is 125531863. The next prime is 125531891. The reversal of 125531879 is 978135521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125531879 - 2⁴ = 125531863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125531279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300107 + ... + 300524.

It is an arithmetic number, because the mean of its divisors is an integer number (18018960).

Almost surely, 2^125531879 is an apocalyptic number.

125531879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

125531879 is a deficient number, since it is larger than the sum of its proper divisors (18619801).

125531879 is a wasteful number, since it uses less digits than its factorization.

125531879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600661.

The product of its digits is 75600, while the sum is 41.

The square root of 125531879 is about 11204.1009902624. The cubic root of 125531879 is about 500.7081685212.

The spelling of 125531879 in words is "one hundred twenty-five million, five hundred thirty-one thousand, eight hundred seventy-nine".