22520664025 has 6 divisors (see below), whose sum is σ = 27925623422. Its totient is φ = 18016531200.

The previous prime is 22520664013. The next prime is 22520664043. The reversal of 22520664025 is 52046602522.

It can be written as a sum of positive squares in 3 ways, for example, as 6140759769 + 16379904256 = 78363^2 + 127984^2 .

It is not a de Polignac number, because 22520664025 - 2⁹ = 22520663513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450413256 + ... + 450413305.

Almost surely, 2^22520664025 is an apocalyptic number.

22520664025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22520664025 is a deficient number, since it is larger than the sum of its proper divisors (5404959397).

22520664025 is an equidigital number, since it uses as much as digits as its factorization.

22520664025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900826571 (or 900826566 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 22520664025 in words is "twenty-two billion, five hundred twenty million, six hundred sixty-four thousand, twenty-five".