25123980000 has 480 divisors, whose sum is σ = 96548094720. Its totient is φ = 5598720000.

The previous prime is 25123979981. The next prime is 25123980023. The reversal of 25123980000 is 8932152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 25123980000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17219271 + ... + 17220729.

It is an arithmetic number, because the mean of its divisors is an integer number (201141864).

Almost surely, 2^25123980000 is an apocalyptic number.

25123980000 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 25123980000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48274047360).

25123980000 is an abundant number, since it is smaller than the sum of its proper divisors (71424114720).

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

25123980000 is a wasteful number, since it uses less digits than its factorization.

25123980000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540 (or 1517 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 25123980000 in words is "twenty-five billion, one hundred twenty-three million, nine hundred eighty thousand".