216040407625 has 32 divisors (see below), whose sum is σ = 308178883584. Its totient is φ = 148121064000.

The previous prime is 216040407593. The next prime is 216040407629. The reversal of 216040407625 is 526704040612.

It is not a de Polignac number, because 216040407625 - 2⁵ = 216040407593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216040407629) 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 31 ways as a sum of consecutive naturals, for example, 8624619 + ... + 8649631.

It is an arithmetic number, because the mean of its divisors is an integer number (9630590112).

Almost surely, 2^216040407625 is an apocalyptic number.

216040407625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216040407625 is a deficient number, since it is larger than the sum of its proper divisors (92138475959).

216040407625 is an equidigital number, since it uses as much as digits as its factorization.

216040407625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34906 (or 34896 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 216040407625 in words is "two hundred sixteen billion, forty million, four hundred seven thousand, six hundred twenty-five".