125544631 has 4 divisors (see below), whose sum is σ = 125575200. Its totient is φ = 125514064.

The previous prime is 125544611. The next prime is 125544641. The reversal of 125544631 is 136445521.

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 125544631 - 2⁵ = 125544599 is a prime.

It is a super-2 number, since 2×125544631² = 31522908745852322, 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 = 125544593 and 125544602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125544611) 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, 7951 + ... + 17728.

It is an arithmetic number, because the mean of its divisors is an integer number (31393800).

Almost surely, 2^125544631 is an apocalyptic number.

125544631 is a deficient number, since it is larger than the sum of its proper divisors (30569).

125544631 is an equidigital number, since it uses as much as digits as its factorization.

125544631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30568.

The product of its digits is 14400, while the sum is 31.

The square root of 125544631 is about 11204.6700531519. The cubic root of 125544631 is about 500.7251225529.

The spelling of 125544631 in words is "one hundred twenty-five million, five hundred forty-four thousand, six hundred thirty-one".