22542511215240 has 48 divisors (see below), whose sum is σ = 73263161450700. Its totient is φ = 6011336323968.

The previous prime is 22542511215139. The next prime is 22542511215241. The reversal of 22542511215240 is 4251211524522.

It is a happy number.

22542511215240 is a `hidden beast` number, since 2 + 2 + 5 + 4 + 2 + 5 + 1 + 121 + 524 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22526167638276 + 16343576964 = 4746174^2 + 127842^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22542511215195 and 22542511215204.

It is not an unprimeable number, because it can be changed into a prime (22542511215241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31309042995 + ... + 31309043714.

Almost surely, 2^{22542511215240} is an apocalyptic number.

22542511215240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22542511215240 is an abundant number, since it is smaller than the sum of its proper divisors (50720650235460).

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

22542511215240 is a wasteful number, since it uses less digits than its factorization.

22542511215240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62618086726 (or 62618086719 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

Adding to 22542511215240 its reverse (4251211524522), we get a palindrome (26793722739762).

The spelling of 22542511215240 in words is "twenty-two trillion, five hundred forty-two billion, five hundred eleven million, two hundred fifteen thousand, two hundred forty".