22442525540 has 24 divisors (see below), whose sum is σ = 49178404800. Its totient is φ = 8586705248.

The previous prime is 22442525531. The next prime is 22442525543. The reversal of 22442525540 is 4552524422.

It is a happy number.

It is a super-2 number, since 2×22442525540² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22442525540.

It is not an unprimeable number, because it can be changed into a prime (22442525543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24393590 + ... + 24394509.

It is an arithmetic number, because the mean of its divisors is an integer number (2049100200).

Almost surely, 2^22442525540 is an apocalyptic number.

22442525540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22442525540 is an abundant number, since it is smaller than the sum of its proper divisors (26735879260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22442525540 is a wasteful number, since it uses less digits than its factorization.

22442525540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48788131 (or 48788129 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 35.

The spelling of 22442525540 in words is "twenty-two billion, four hundred forty-two million, five hundred twenty-five thousand, five hundred forty".