20252223450 has 60 divisors (see below), whose sum is σ = 56271189150. Its totient is φ = 5400591840.

The previous prime is 20252223449. The next prime is 20252223451. The reversal of 20252223450 is 5432225202.

20252223450 is a `hidden beast` number, since 202 + 5 + 2 + 2 + 2 + 3 + 450 = 666.

It is an interprime number because it is at equal distance from previous prime (20252223449) and next prime (20252223451).

It can be written as a sum of positive squares in 3 ways, for example, as 15611752809 + 4640470641 = 124947^2 + 68121^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20252223451) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2496225 + ... + 2504324.

Almost surely, 2^20252223450 is an apocalyptic number.

20252223450 is an abundant number, since it is smaller than the sum of its proper divisors (36018965700).

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

20252223450 is a wasteful number, since it uses less digits than its factorization.

20252223450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000573 (or 5000559 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 20252223450 its reverse (5432225202), we get a palindrome (25684448652).

The spelling of 20252223450 in words is "twenty billion, two hundred fifty-two million, two hundred twenty-three thousand, four hundred fifty".