22507521040 has 40 divisors (see below), whose sum is σ = 52601162328. Its totient is φ = 8956354560.

The previous prime is 22507521037. The next prime is 22507521041. The reversal of 22507521040 is 4012570522.

It can be written as a sum of positive squares in 4 ways, for example, as 1726568704 + 20780952336 = 41552^2 + 144156^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (22507521041) 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, 713431 + ... + 744310.

Almost surely, 2^22507521040 is an apocalyptic number.

22507521040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22507521040 is an abundant number, since it is smaller than the sum of its proper divisors (30093641288).

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

22507521040 is a wasteful number, since it uses less digits than its factorization.

22507521040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457947 (or 1457941 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The spelling of 22507521040 in words is "twenty-two billion, five hundred seven million, five hundred twenty-one thousand, forty".