612125631 has 12 divisors (see below), whose sum is σ = 952195608. Its totient is φ = 376692624.

The previous prime is 612125629. The next prime is 612125653. The reversal of 612125631 is 136521216.

612125631 is a `hidden beast` number, since 6 + 1 + 2 + 1 + 25 + 631 = 666.

It is not a de Polignac number, because 612125631 - 2¹ = 612125629 is a prime.

It is a super-2 number, since 2×612125631² = 749395576254296322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 612125595 and 612125604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612125621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2615805 + ... + 2616038.

It is an arithmetic number, because the mean of its divisors is an integer number (79349634).

Almost surely, 2^612125631 is an apocalyptic number.

612125631 is a deficient number, since it is larger than the sum of its proper divisors (340069977).

612125631 is a wasteful number, since it uses less digits than its factorization.

612125631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231862 (or 5231859 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 612125631 is about 24741.1727895021. The cubic root of 612125631 is about 849.0765662404.

Adding to 612125631 its reverse (136521216), we get a palindrome (748646847).

The spelling of 612125631 in words is "six hundred twelve million, one hundred twenty-five thousand, six hundred thirty-one".