25131066222 has 64 divisors (see below), whose sum is σ = 52124083200. Its totient is φ = 8071516800.

The previous prime is 25131066211. The next prime is 25131066251. The reversal of 25131066222 is 22266013152.

It is a self number, because there is not a number n which added to its sum of digits gives 25131066222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10688347 + ... + 10690697.

It is an arithmetic number, because the mean of its divisors is an integer number (814438800).

Almost surely, 2^25131066222 is an apocalyptic number.

25131066222 is an abundant number, since it is smaller than the sum of its proper divisors (26993016978).

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

25131066222 is a wasteful number, since it uses less digits than its factorization.

25131066222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 25131066222 its reverse (22266013152), we get a palindrome (47397079374).

The spelling of 25131066222 in words is "twenty-five billion, one hundred thirty-one million, sixty-six thousand, two hundred twenty-two".