25320480 has 192 divisors, whose sum is σ = 88179840. Its totient is φ = 6078464.

The previous prime is 25320479. The next prime is 25320481. The reversal of 25320480 is 8402352.

It is an interprime number because it is at equal distance from previous prime (25320479) and next prime (25320481).

It is a super-2 number, since 2×25320480² = 1282253414860800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 25320480.

It is not an unprimeable number, because it can be changed into a prime (25320481) 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, 236587 + ... + 236693.

It is an arithmetic number, because the mean of its divisors is an integer number (459270).

Almost surely, 2^25320480 is an apocalyptic number.

25320480 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 25320480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44089920).

25320480 is an abundant number, since it is smaller than the sum of its proper divisors (62859360).

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

25320480 is a wasteful number, since it uses less digits than its factorization.

25320480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25320480 is about 5031.9459456556. The cubic root of 25320480 is about 293.6459248026.

The spelling of 25320480 in words is "twenty-five million, three hundred twenty thousand, four hundred eighty".