654136625 has 32 divisors (see below), whose sum is σ = 867503520. Its totient is φ = 490752000.

The previous prime is 654136603. The next prime is 654136643. The reversal of 654136625 is 526631456.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 512026384 + 142110241 = 22628^2 + 11921^2 .

It is not a de Polignac number, because 654136625 - 2⁸ = 654136369 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1149341 + ... + 1149909.

It is an arithmetic number, because the mean of its divisors is an integer number (27109485).

Almost surely, 2^654136625 is an apocalyptic number.

It is an amenable number.

654136625 is a deficient number, since it is larger than the sum of its proper divisors (213366895).

654136625 is a wasteful number, since it uses less digits than its factorization.

654136625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1132 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 654136625 is about 25576.0947957267. The cubic root of 654136625 is about 868.0728138886.

The spelling of 654136625 in words is "six hundred fifty-four million, one hundred thirty-six thousand, six hundred twenty-five".