25512480 has 144 divisors (see below), whose sum is σ = 99537984. Its totient is φ = 5829120.

The previous prime is 25512479. The next prime is 25512517. The reversal of 25512480 is 8421552.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8815 + ... + 11345.

It is an arithmetic number, because the mean of its divisors is an integer number (691236).

Almost surely, 2^25512480 is an apocalyptic number.

25512480 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 25512480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49768992).

25512480 is an abundant number, since it is smaller than the sum of its proper divisors (74025504).

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

25512480 is a wasteful number, since it uses less digits than its factorization.

25512480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559 (or 2548 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 25512480 is about 5050.9880221596. The cubic root of 25512480 is about 294.3862755495.

The spelling of 25512480 in words is "twenty-five million, five hundred twelve thousand, four hundred eighty".