3933617722225 has 9 divisors (see below), whose sum is σ = 4877698272267. Its totient is φ = 3146886244440.

The previous prime is 3933617722171. The next prime is 3933617722273. The reversal of 3933617722225 is 5222277163393.

The square root of 3933617722225 is 1983335.

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

It can be written as a sum of positive squares in only one way, i.e., 1416102380001 + 2517515342224 = 1190001^2 + 1586668^2 .

It is not a de Polignac number, because 3933617722225 - 2³⁵ = 3899257983857 is a prime.

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, 9718342 + ... + 10115008.

Almost surely, 2^{3933617722225} is an apocalyptic number.

3933617722225 is the 1983335-th square number.

3933617722225 is the 991668-th centered octagonal number.

It is an amenable number.

3933617722225 is a deficient number, since it is larger than the sum of its proper divisors (944080550042).

3933617722225 is an frugal number, since it uses more digits than its factorization.

3933617722225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793344 (or 396672 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 52.

The spelling of 3933617722225 in words is "three trillion, nine hundred thirty-three billion, six hundred seventeen million, seven hundred twenty-two thousand, two hundred twenty-five".