125164631 has 4 divisors (see below), whose sum is σ = 125564832. Its totient is φ = 124764432.

The previous prime is 125164621. The next prime is 125164649. The reversal of 125164631 is 136461521.

It is a happy number.

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 125164631 - 2¹⁰ = 125163607 is a prime.

It is a super-2 number, since 2×125164631² = 31332369706732322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125164594 and 125164603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125164601) 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, 199631 + ... + 200256.

It is an arithmetic number, because the mean of its divisors is an integer number (31391208).

Almost surely, 2^125164631 is an apocalyptic number.

125164631 is a deficient number, since it is larger than the sum of its proper divisors (400201).

125164631 is an equidigital number, since it uses as much as digits as its factorization.

125164631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400200.

The product of its digits is 4320, while the sum is 29.

The square root of 125164631 is about 11187.6999870393. The cubic root of 125164631 is about 500.2194117029.

The spelling of 125164631 in words is "one hundred twenty-five million, one hundred sixty-four thousand, six hundred thirty-one".