616381365525 has 24 divisors (see below), whose sum is σ = 1046626669344. Its totient is φ = 319851950400.

The previous prime is 616381365521. The next prime is 616381365527. The reversal of 616381365525 is 525563183616.

It is not a de Polignac number, because 616381365525 - 2² = 616381365521 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616381365521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111056931 + ... + 111062480.

It is an arithmetic number, because the mean of its divisors is an integer number (43609444556).

Almost surely, 2^616381365525 is an apocalyptic number.

It is an amenable number.

616381365525 is a deficient number, since it is larger than the sum of its proper divisors (430245303819).

616381365525 is a wasteful number, since it uses less digits than its factorization.

616381365525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222119461 (or 222119456 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 51.

The spelling of 616381365525 in words is "six hundred sixteen billion, three hundred eighty-one million, three hundred sixty-five thousand, five hundred twenty-five".