25329806492980 has 96 divisors (see below), whose sum is σ = 58380220442880. Its totient is φ = 9155138503680.

The previous prime is 25329806492941. The next prime is 25329806492981. The reversal of 25329806492980 is 8929460892352.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25329806492981) 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, 24416329 + ... + 25432591.

It is an arithmetic number, because the mean of its divisors is an integer number (608127296280).

Almost surely, 2^{25329806492980} is an apocalyptic number.

25329806492980 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 25329806492980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29190110221440).

25329806492980 is an abundant number, since it is smaller than the sum of its proper divisors (33050413949900).

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

25329806492980 is a wasteful number, since it uses less digits than its factorization.

25329806492980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016969 (or 1016967 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 67.

The spelling of 25329806492980 in words is "twenty-five trillion, three hundred twenty-nine billion, eight hundred six million, four hundred ninety-two thousand, nine hundred eighty".