722215531225 has 24 divisors (see below), whose sum is σ = 905781262400. Its totient is φ = 571206841920.

The previous prime is 722215531223. The next prime is 722215531313. The reversal of 722215531225 is 522135512227.

722215531225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 722215531225 - 2¹ = 722215531223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722215531223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318754 + ... + 1243396.

Almost surely, 2^722215531225 is an apocalyptic number.

It is an amenable number.

722215531225 is a deficient number, since it is larger than the sum of its proper divisors (183565731175).

722215531225 is a wasteful number, since it uses less digits than its factorization.

722215531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925009 (or 925004 counting only the distinct ones).

The product of its digits is 84000, while the sum is 37.

The spelling of 722215531225 in words is "seven hundred twenty-two billion, two hundred fifteen million, five hundred thirty-one thousand, two hundred twenty-five".