25123422980 has 48 divisors (see below), whose sum is σ = 55704048960. Its totient is φ = 9491644800.

The previous prime is 25123422979. The next prime is 25123422983. The reversal of 25123422980 is 8922432152.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (25123422983) 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, 25910 + ... + 225650.

It is an arithmetic number, because the mean of its divisors is an integer number (1160501020).

Almost surely, 2^25123422980 is an apocalyptic number.

25123422980 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 25123422980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27852024480).

25123422980 is an abundant number, since it is smaller than the sum of its proper divisors (30580625980).

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

25123422980 is a wasteful number, since it uses less digits than its factorization.

25123422980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200100 (or 200098 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 25123422980 in words is "twenty-five billion, one hundred twenty-three million, four hundred twenty-two thousand, nine hundred eighty".