25608780870 has 64 divisors (see below), whose sum is σ = 62413424640. Its totient is φ = 6723307008.

The previous prime is 25608780863. The next prime is 25608780871. The reversal of 25608780870 is 7808780652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25608780871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6749694 + ... + 6753486.

It is an arithmetic number, because the mean of its divisors is an integer number (975209760).

Almost surely, 2^25608780870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25608780870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31206712320).

25608780870 is an abundant number, since it is smaller than the sum of its proper divisors (36804643770).

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

25608780870 is a wasteful number, since it uses less digits than its factorization.

25608780870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7229.

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 25608780870 in words is "twenty-five billion, six hundred eight million, seven hundred eighty thousand, eight hundred seventy".