216504044625 has 48 divisors (see below), whose sum is σ = 395991348480. Its totient is φ = 104971636000.

The previous prime is 216504044593. The next prime is 216504044641. The reversal of 216504044625 is 526440405612.

It is not a de Polignac number, because 216504044625 - 2⁵ = 216504044593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2340345 + ... + 2431094.

It is an arithmetic number, because the mean of its divisors is an integer number (8249819760).

Almost surely, 2^216504044625 is an apocalyptic number.

216504044625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216504044625 is a deficient number, since it is larger than the sum of its proper divisors (179487303855).

216504044625 is a wasteful number, since it uses less digits than its factorization.

216504044625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4771479 (or 4771458 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 216504044625 in words is "two hundred sixteen billion, five hundred four million, forty-four thousand, six hundred twenty-five".