2522226645 has 12 divisors (see below), whose sum is σ = 4371859596. Its totient is φ = 1345187520.

The previous prime is 2522226617. The next prime is 2522226647. The reversal of 2522226645 is 5466222252.

2522226645 is a `hidden beast` number, since 2 + 5 + 2 + 2 + 2 + 2 + 6 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1640493009 + 881733636 = 40503^2 + 29694^2 .

It is not a de Polignac number, because 2522226645 - 2⁵ = 2522226613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2522226647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28024696 + ... + 28024785.

It is an arithmetic number, because the mean of its divisors is an integer number (364321633).

Almost surely, 2^2522226645 is an apocalyptic number.

It is an amenable number.

2522226645 is a deficient number, since it is larger than the sum of its proper divisors (1849632951).

2522226645 is a wasteful number, since it uses less digits than its factorization.

2522226645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56049492 (or 56049489 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 2522226645 is about 50221.7746102226. The cubic root of 2522226645 is about 1361.2191067268.

Adding to 2522226645 its reverse (5466222252), we get a palindrome (7988448897).

The spelling of 2522226645 in words is "two billion, five hundred twenty-two million, two hundred twenty-six thousand, six hundred forty-five".