22515140250 has 96 divisors (see below), whose sum is σ = 61614955584. Its totient is φ = 5931650400.

The previous prime is 22515140237. The next prime is 22515140287. The reversal of 22515140250 is 5204151522.

22515140250 is a `hidden beast` number, since 2 + 2 + 515 + 140 + 2 + 5 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126469 + ... + 247031.

It is an arithmetic number, because the mean of its divisors is an integer number (641822454).

Almost surely, 2^22515140250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22515140250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30807477792).

22515140250 is an abundant number, since it is smaller than the sum of its proper divisors (39099815334).

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

22515140250 is a wasteful number, since it uses less digits than its factorization.

22515140250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120669 (or 120656 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 22515140250 its reverse (5204151522), we get a palindrome (27719291772).

The spelling of 22515140250 in words is "twenty-two billion, five hundred fifteen million, one hundred forty thousand, two hundred fifty".