16225252515 has 12 divisors (see below), whose sum is σ = 28123771104. Its totient is φ = 8653467984.

The previous prime is 16225252487. The next prime is 16225252517. The reversal of 16225252515 is 51525252261.

16225252515 is a `hidden beast` number, since 1 + 622 + 5 + 2 + 5 + 25 + 1 + 5 = 666.

It is not a de Polignac number, because 16225252515 - 2²⁴ = 16208475299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16225252515.

It is not an unprimeable number, because it can be changed into a prime (16225252517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180280539 + ... + 180280628.

It is an arithmetic number, because the mean of its divisors is an integer number (2343647592).

Almost surely, 2^16225252515 is an apocalyptic number.

16225252515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16225252515 is a deficient number, since it is larger than the sum of its proper divisors (11898518589).

16225252515 is a wasteful number, since it uses less digits than its factorization.

16225252515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360561178 (or 360561175 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The spelling of 16225252515 in words is "sixteen billion, two hundred twenty-five million, two hundred fifty-two thousand, five hundred fifteen".