25102122020 has 24 divisors (see below), whose sum is σ = 53381731200. Its totient is φ = 9913748832.

The previous prime is 25102122013. The next prime is 25102122043. The reversal of 25102122020 is 2022120152.

It is a self number, because there is not a number n which added to its sum of digits gives 25102122020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7942130 + ... + 7945289.

It is an arithmetic number, because the mean of its divisors is an integer number (2224238800).

Almost surely, 2^25102122020 is an apocalyptic number.

25102122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25102122020 is an abundant number, since it is smaller than the sum of its proper divisors (28279609180).

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

25102122020 is a wasteful number, since it uses less digits than its factorization.

25102122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15887507 (or 15887505 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 25102122020 its reverse (2022120152), we get a palindrome (27124242172).

The spelling of 25102122020 in words is "twenty-five billion, one hundred two million, one hundred twenty-two thousand, twenty".