722825152661 has 2 divisors, whose sum is σ = 722825152662. Its totient is φ = 722825152660.

The previous prime is 722825152639. The next prime is 722825152697. The reversal of 722825152661 is 166251528227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435844234225 + 286980918436 = 660185^2 + 535706^2 .

It is a cyclic number.

It is not a de Polignac number, because 722825152661 - 2³⁸ = 447947245717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722825152561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361412576330 + 361412576331.

It is an arithmetic number, because the mean of its divisors is an integer number (361412576331).

Almost surely, 2^722825152661 is an apocalyptic number.

It is an amenable number.

722825152661 is a deficient number, since it is larger than the sum of its proper divisors (1).

722825152661 is an equidigital number, since it uses as much as digits as its factorization.

722825152661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 47.

The spelling of 722825152661 in words is "seven hundred twenty-two billion, eight hundred twenty-five million, one hundred fifty-two thousand, six hundred sixty-one".