25420480 has 112 divisors (see below), whose sum is σ = 66019680. Its totient is φ = 9289728.

The previous prime is 25420477. The next prime is 25420511. The reversal of 25420480 is 8402452.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224904 + ... + 225016.

Almost surely, 2^25420480 is an apocalyptic number.

25420480 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 25420480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33009840).

25420480 is an abundant number, since it is smaller than the sum of its proper divisors (40599200).

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

25420480 is a wasteful number, since it uses less digits than its factorization.

25420480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 25420480 is about 5041.8726679677. The cubic root of 25420480 is about 294.0319893617.

The spelling of 25420480 in words is "twenty-five million, four hundred twenty thousand, four hundred eighty".