25130321860 has 96 divisors (see below), whose sum is σ = 61157376000. Its totient is φ = 8495750016.

The previous prime is 25130321773. The next prime is 25130321869. The reversal of 25130321860 is 6812303152.

It is not an unprimeable number, because it can be changed into a prime (25130321869) 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, 15914551 + ... + 15916129.

It is an arithmetic number, because the mean of its divisors is an integer number (637056000).

Almost surely, 2^25130321860 is an apocalyptic number.

25130321860 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 25130321860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30578688000).

25130321860 is an abundant number, since it is smaller than the sum of its proper divisors (36027054140).

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

25130321860 is a wasteful number, since it uses less digits than its factorization.

25130321860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113 (or 3111 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 25130321860 in words is "twenty-five billion, one hundred thirty million, three hundred twenty-one thousand, eight hundred sixty".