25525252802780 has 24 divisors (see below), whose sum is σ = 53764973591280. Its totient is φ = 10179254891520.

The previous prime is 25525252802773. The next prime is 25525252802809. The reversal of 25525252802780 is 8720825252552.

It is a congruent number.

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, 1927882565 + ... + 1927895804.

It is an arithmetic number, because the mean of its divisors is an integer number (2240207232970).

Almost surely, 2^{25525252802780} is an apocalyptic number.

25525252802780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25525252802780 is an abundant number, since it is smaller than the sum of its proper divisors (28239720788500).

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

25525252802780 is a wasteful number, since it uses less digits than its factorization.

25525252802780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855778709 (or 3855778707 counting only the distinct ones).

The product of its (nonzero) digits is 8960000, while the sum is 53.

The spelling of 25525252802780 in words is "twenty-five trillion, five hundred twenty-five billion, two hundred fifty-two million, eight hundred two thousand, seven hundred eighty".