25532480 has 56 divisors (see below), whose sum is σ = 61688472. Its totient is φ = 10063872.

The previous prime is 25532471. The next prime is 25532509. The reversal of 25532480 is 8423552.

It can be written as a sum of positive squares in 4 ways, for example, as 10291264 + 15241216 = 3208^2 + 3904^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22814 + ... + 23906.

Almost surely, 2^25532480 is an apocalyptic number.

25532480 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 25532480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30844236).

25532480 is an abundant number, since it is smaller than the sum of its proper divisors (36155992).

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

25532480 is a wasteful number, since it uses less digits than its factorization.

25532480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 25532480 is about 5052.9674449773. The cubic root of 25532480 is about 294.4631815404.

The spelling of 25532480 in words is "twenty-five million, five hundred thirty-two thousand, four hundred eighty".