612687425 has 18 divisors (see below), whose sum is σ = 883772118. Its totient is φ = 420127680.

The previous prime is 612687421. The next prime is 612687451. The reversal of 612687425 is 524786216.

It can be written as a sum of positive squares in 3 ways, for example, as 25921 + 612661504 = 161^2 + 24752^2 .

It is not a de Polignac number, because 612687425 - 2² = 612687421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612687421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 248852 + ... + 251301.

It is an arithmetic number, because the mean of its divisors is an integer number (49098451).

Almost surely, 2^612687425 is an apocalyptic number.

It is an amenable number.

612687425 is a deficient number, since it is larger than the sum of its proper divisors (271084693).

612687425 is a wasteful number, since it uses less digits than its factorization.

612687425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500177 (or 500165 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 612687425 is about 24752.5236087151. The cubic root of 612687425 is about 849.3362407487.

The spelling of 612687425 in words is "six hundred twelve million, six hundred eighty-seven thousand, four hundred twenty-five".