2522636641 has 8 divisors (see below), whose sum is σ = 2886827840. Its totient is φ = 2159399088.

The previous prime is 2522636621. The next prime is 2522636657. The reversal of 2522636641 is 1466362252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2522636641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2522636641.

It is not an unprimeable number, because it can be changed into a prime (2522636621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232731 + ... + 243328.

It is an arithmetic number, because the mean of its divisors is an integer number (360853480).

Almost surely, 2^2522636641 is an apocalyptic number.

It is an amenable number.

2522636641 is a deficient number, since it is larger than the sum of its proper divisors (364191199).

2522636641 is an equidigital number, since it uses as much as digits as its factorization.

2522636641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476823.

The product of its digits is 103680, while the sum is 37.

The square root of 2522636641 is about 50225.8562993206. The cubic root of 2522636641 is about 1361.2928595690.

Adding to 2522636641 its reverse (1466362252), we get a palindrome (3988998893).

The spelling of 2522636641 in words is "two billion, five hundred twenty-two million, six hundred thirty-six thousand, six hundred forty-one".