125213636 has 12 divisors (see below), whose sum is σ = 232013628. Its totient is φ = 58924032.

The previous prime is 125213617. The next prime is 125213651. The reversal of 125213636 is 636312521.

It can be written as a sum of positive squares in 2 ways, for example, as 88247236 + 36966400 = 9394^2 + 6080^2 .

It is a junction number, because it is equal to n+sod(n) for n = 125213599 and 125213608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920621 + ... + 920756.

It is an arithmetic number, because the mean of its divisors is an integer number (19334469).

Almost surely, 2^125213636 is an apocalyptic number.

It is an amenable number.

125213636 is a deficient number, since it is larger than the sum of its proper divisors (106799992).

125213636 is a wasteful number, since it uses less digits than its factorization.

125213636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841398 (or 1841396 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 125213636 is about 11189.8899011563. The cubic root of 125213636 is about 500.2846858771.

The spelling of 125213636 in words is "one hundred twenty-five million, two hundred thirteen thousand, six hundred thirty-six".