22245442452 has 60 divisors (see below), whose sum is σ = 58687596660. Its totient is φ = 7347106944.

The previous prime is 22245442451. The next prime is 22245442481. The reversal of 22245442452 is 25424454222.

22245442452 is a `hidden beast` number, since 2 + 224 + 5 + 4 + 424 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7583623056 + 14661819396 = 87084^2 + 121086^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22245442451) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 279633 + ... + 350264.

It is an arithmetic number, because the mean of its divisors is an integer number (978126611).

Almost surely, 2^22245442452 is an apocalyptic number.

It is an amenable number.

22245442452 is an abundant number, since it is smaller than the sum of its proper divisors (36442154208).

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

22245442452 is a wasteful number, since it uses less digits than its factorization.

22245442452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630022 (or 630011 counting only the distinct ones).

The product of its digits is 204800, while the sum is 36.

Adding to 22245442452 its reverse (25424454222), we get a palindrome (47669896674).

The spelling of 22245442452 in words is "twenty-two billion, two hundred forty-five million, four hundred forty-two thousand, four hundred fifty-two".