125178231 has 4 divisors (see below), whose sum is σ = 166904312. Its totient is φ = 83452152.

The previous prime is 125178227. The next prime is 125178253. The reversal of 125178231 is 132871521.

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

It is not a de Polignac number, because 125178231 - 2² = 125178227 is a prime.

It is a super-2 number, since 2×125178231² = 31339179032578722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125178211) 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, 20863036 + ... + 20863041.

It is an arithmetic number, because the mean of its divisors is an integer number (41726078).

Almost surely, 2^125178231 is an apocalyptic number.

125178231 is a deficient number, since it is larger than the sum of its proper divisors (41726081).

125178231 is an equidigital number, since it uses as much as digits as its factorization.

125178231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41726080.

The product of its digits is 3360, while the sum is 30.

The square root of 125178231 is about 11188.3077808934. The cubic root of 125178231 is about 500.2375284759.

The spelling of 125178231 in words is "one hundred twenty-five million, one hundred seventy-eight thousand, two hundred thirty-one".