616745625 has 20 divisors (see below), whose sum is σ = 1027583568. Its totient is φ = 328930000.

The previous prime is 616745617. The next prime is 616745627. The reversal of 616745625 is 526547616.

It is not a de Polignac number, because 616745625 - 2³ = 616745617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616745627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 162591 + ... + 166340.

Almost surely, 2^616745625 is an apocalyptic number.

It is an amenable number.

616745625 is a deficient number, since it is larger than the sum of its proper divisors (410837943).

616745625 is an equidigital number, since it uses as much as digits as its factorization.

616745625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328954 (or 328939 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 616745625 is about 24834.3637929382. The cubic root of 616745625 is about 851.2073384965.

The spelling of 616745625 in words is "six hundred sixteen million, seven hundred forty-five thousand, six hundred twenty-five".