25122404020 has 24 divisors (see below), whose sum is σ = 60293769984. Its totient is φ = 8613395616.

The previous prime is 25122404011. The next prime is 25122404023. The reversal of 25122404020 is 2040422152.

It is a super-2 number, since 2×25122404020² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25122403982 and 25122404000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25122404023) 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, 89722732 + ... + 89723011.

It is an arithmetic number, because the mean of its divisors is an integer number (2512240416).

Almost surely, 2^25122404020 is an apocalyptic number.

25122404020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25122404020 is an abundant number, since it is smaller than the sum of its proper divisors (35171365964).

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

25122404020 is a wasteful number, since it uses less digits than its factorization.

25122404020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179445759 (or 179445757 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 25122404020 its reverse (2040422152), we get a palindrome (27162826172).

The spelling of 25122404020 in words is "twenty-five billion, one hundred twenty-two million, four hundred four thousand, twenty".