22631281250 has 126 divisors (see below), whose sum is σ = 45589514103. Its totient is φ = 8424900000.

The previous prime is 22631281219. The next prime is 22631281303. The reversal of 22631281250 is 5218213622.

It can be written as a sum of positive squares in 11 ways, for example, as 10650446401 + 11980834849 = 103201^2 + 109457^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106375.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 611656232 + ... + 611656268.

Almost surely, 2^22631281250 is an apocalyptic number.

22631281250 is an abundant number, since it is smaller than the sum of its proper divisors (22958232853).

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

22631281250 is an frugal number, since it uses more digits than its factorization.

22631281250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Multiplying 22631281250 by its sum of digits (32), we get a square (724201000000 = 851000²).

Adding to 22631281250 its reverse (5218213622), we get a palindrome (27849494872).

The spelling of 22631281250 in words is "twenty-two billion, six hundred thirty-one million, two hundred eighty-one thousand, two hundred fifty".