25025325660 has 144 divisors (see below), whose sum is σ = 80432273376. Its totient is φ = 6276427776.

The previous prime is 25025325659. The next prime is 25025325679. The reversal of 25025325660 is 6652352052.

25025325660 is a `hidden beast` number, since 250 + 25 + 325 + 6 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7565727 + ... + 7569033.

It is an arithmetic number, because the mean of its divisors is an integer number (558557454).

Almost surely, 2^25025325660 is an apocalyptic number.

25025325660 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 25025325660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40216136688).

25025325660 is an abundant number, since it is smaller than the sum of its proper divisors (55406947716).

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

25025325660 is a wasteful number, since it uses less digits than its factorization.

25025325660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5812 (or 5807 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 25025325660 in words is "twenty-five billion, twenty-five million, three hundred twenty-five thousand, six hundred sixty".