612136725 has 24 divisors (see below), whose sum is σ = 1021904832. Its totient is φ = 323299200.

The previous prime is 612136711. The next prime is 612136747. The reversal of 612136725 is 527631216.

It is not a de Polignac number, because 612136725 - 2⁷ = 612136597 is a prime.

It is a super-2 number, since 2×612136725² = 749422740187451250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31896 + ... + 47345.

It is an arithmetic number, because the mean of its divisors is an integer number (42579368).

Almost surely, 2^612136725 is an apocalyptic number.

It is an amenable number.

612136725 is a deficient number, since it is larger than the sum of its proper divisors (409768107).

612136725 is a wasteful number, since it uses less digits than its factorization.

612136725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79357 (or 79352 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 612136725 is about 24741.3969896609. The cubic root of 612136725 is about 849.0816956878.

The spelling of 612136725 in words is "six hundred twelve million, one hundred thirty-six thousand, seven hundred twenty-five".