622257725 has 12 divisors (see below), whose sum is σ = 776519124. Its totient is φ = 494632320.

The previous prime is 622257707. The next prime is 622257781. The reversal of 622257725 is 527752226.

It can be written as a sum of positive squares in 6 ways, for example, as 22448644 + 599809081 = 4738^2 + 24491^2 .

It is not a de Polignac number, because 622257725 - 2⁸ = 622257469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75344 + ... + 83193.

It is an arithmetic number, because the mean of its divisors is an integer number (64709927).

Almost surely, 2^622257725 is an apocalyptic number.

It is an amenable number.

622257725 is a deficient number, since it is larger than the sum of its proper divisors (154261399).

622257725 is a wasteful number, since it uses less digits than its factorization.

622257725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158704 (or 158699 counting only the distinct ones).

The product of its digits is 117600, while the sum is 38.

The square root of 622257725 is about 24945.0942070781. The cubic root of 622257725 is about 853.7356802010.

The spelling of 622257725 in words is "six hundred twenty-two million, two hundred fifty-seven thousand, seven hundred twenty-five".