16622459014225 has 9 divisors (see below), whose sum is σ = 20611874455473. Its totient is φ = 13297950903120.

The previous prime is 16622459014211. The next prime is 16622459014253. The reversal of 16622459014225 is 52241095422661.

The square root of 16622459014225 is 4077065.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5913490742289 + 10708968271936 = 2431767^2 + 3272456^2 .

It is not a de Polignac number, because 16622459014225 - 2³⁵ = 16588099275857 is a prime.

It is a super-2 number, since 2×16622459014225² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19977619 + ... + 20793031.

Almost surely, 2^{16622459014225} is an apocalyptic number.

16622459014225 is the 4077065-th square number.

16622459014225 is the 2038533-rd centered octagonal number.

It is an amenable number.

16622459014225 is a deficient number, since it is larger than the sum of its proper divisors (3989415441248).

16622459014225 is an frugal number, since it uses more digits than its factorization.

16622459014225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630836 (or 815418 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 49.

Multiplying 16622459014225 by its sum of digits (49), we get a square (814500491697025 = 28539455²).

The spelling of 16622459014225 in words is "sixteen trillion, six hundred twenty-two billion, four hundred fifty-nine million, fourteen thousand, two hundred twenty-five".