25613875240 has 64 divisors (see below), whose sum is σ = 59737835520. Its totient is φ = 9873792000.

The previous prime is 25613875213. The next prime is 25613875249. The reversal of 25613875240 is 4257831652.

It is not an unprimeable number, because it can be changed into a prime (25613875249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255985 + ... + 341695.

It is an arithmetic number, because the mean of its divisors is an integer number (933403680).

Almost surely, 2^25613875240 is an apocalyptic number.

25613875240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25613875240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29868917760).

25613875240 is an abundant number, since it is smaller than the sum of its proper divisors (34123960280).

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

25613875240 is a wasteful number, since it uses less digits than its factorization.

25613875240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85994 (or 85990 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 25613875240 in words is "twenty-five billion, six hundred thirteen million, eight hundred seventy-five thousand, two hundred forty".