22506015450 has 48 divisors (see below), whose sum is σ = 55942223040. Its totient is φ = 5987915520.

The previous prime is 22506015397. The next prime is 22506015457. The reversal of 22506015450 is 5451060522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22506015457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105039 + ... + 236738.

It is an arithmetic number, because the mean of its divisors is an integer number (1165462980).

Almost surely, 2^22506015450 is an apocalyptic number.

22506015450 is an abundant number, since it is smaller than the sum of its proper divisors (33436207590).

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

22506015450 is a wasteful number, since it uses less digits than its factorization.

22506015450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342231 (or 342226 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 22506015450 its reverse (5451060522), we get a palindrome (27957075972).

The spelling of 22506015450 in words is "twenty-two billion, five hundred six million, fifteen thousand, four hundred fifty".