16465425220 has 12 divisors (see below), whose sum is σ = 34577393004. Its totient is φ = 6586170080.

The previous prime is 16465425203. The next prime is 16465425307. The reversal of 16465425220 is 2252456461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10075341376 + 6390083844 = 100376^2 + 79938^2 .

It is a super-2 number, since 2×16465425220² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16465425220.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411635611 + ... + 411635650.

It is an arithmetic number, because the mean of its divisors is an integer number (2881449417).

Almost surely, 2^16465425220 is an apocalyptic number.

16465425220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16465425220 is an abundant number, since it is smaller than the sum of its proper divisors (18111967784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16465425220 is a wasteful number, since it uses less digits than its factorization.

16465425220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823271270 (or 823271268 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 16465425220 in words is "sixteen billion, four hundred sixty-five million, four hundred twenty-five thousand, two hundred twenty".