22520552405 has 16 divisors (see below), whose sum is σ = 29189871984. Its totient is φ = 16581196800.

The previous prime is 22520552387. The next prime is 22520552407. The reversal of 22520552405 is 50425502522.

It can be written as a sum of positive squares in 8 ways, for example, as 9247899556 + 13272652849 = 96166^2 + 115207^2 .

It is not a de Polignac number, because 22520552405 - 2³² = 18225585109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520552407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492146 + ... + 535955.

It is an arithmetic number, because the mean of its divisors is an integer number (1824366999).

Almost surely, 2^22520552405 is an apocalyptic number.

It is an amenable number.

22520552405 is a deficient number, since it is larger than the sum of its proper divisors (6669319579).

22520552405 is a wasteful number, since it uses less digits than its factorization.

22520552405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028456.

The product of its (nonzero) digits is 40000, while the sum is 32.

The spelling of 22520552405 in words is "twenty-two billion, five hundred twenty million, five hundred fifty-two thousand, four hundred five".