616554025 has 12 divisors (see below), whose sum is σ = 764880732. Its totient is φ = 493015040.

The previous prime is 616554017. The next prime is 616554073. The reversal of 616554025 is 520455616.

It can be written as a sum of positive squares in 6 ways, for example, as 1315609 + 615238416 = 1147^2 + 24804^2 .

It is not a de Polignac number, because 616554025 - 2³ = 616554017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68169 + ... + 76681.

It is an arithmetic number, because the mean of its divisors is an integer number (63740061).

Almost surely, 2^616554025 is an apocalyptic number.

It is an amenable number.

616554025 is a deficient number, since it is larger than the sum of its proper divisors (148326707).

616554025 is a wasteful number, since it uses less digits than its factorization.

616554025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11420 (or 11415 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 616554025 is about 24830.5059352402. The cubic root of 616554025 is about 851.1191831798.

The spelling of 616554025 in words is "six hundred sixteen million, five hundred fifty-four thousand, twenty-five".