22520145751 has 4 divisors (see below), whose sum is σ = 23705416600. Its totient is φ = 21334874904.

The previous prime is 22520145707. The next prime is 22520145757. The reversal of 22520145751 is 15754102522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15754102522 = 2 ⋅7877051261.

It is a cyclic number.

It is not a de Polignac number, because 22520145751 - 2¹⁵ = 22520112983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520145757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592635396 + ... + 592635433.

It is an arithmetic number, because the mean of its divisors is an integer number (5926354150).

Almost surely, 2^22520145751 is an apocalyptic number.

22520145751 is a deficient number, since it is larger than the sum of its proper divisors (1185270849).

22520145751 is a wasteful number, since it uses less digits than its factorization.

22520145751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185270848.

The product of its (nonzero) digits is 28000, while the sum is 34.

The spelling of 22520145751 in words is "twenty-two billion, five hundred twenty million, one hundred forty-five thousand, seven hundred fifty-one".