25484520 has 64 divisors (see below), whose sum is σ = 77915520. Its totient is φ = 6665984.

The previous prime is 25484497. The next prime is 25484549. The reversal of 25484520 is 2548452.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 4357 + ... + 8363.

It is an arithmetic number, because the mean of its divisors is an integer number (1217430).

Almost surely, 2^25484520 is an apocalyptic number.

25484520 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 25484520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38957760).

25484520 is an abundant number, since it is smaller than the sum of its proper divisors (52431000).

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

25484520 is a wasteful number, since it uses less digits than its factorization.

25484520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074 (or 4070 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 25484520 is about 5048.2194880968. The cubic root of 25484520 is about 294.2786935741.

The spelling of 25484520 in words is "twenty-five million, four hundred eighty-four thousand, five hundred twenty".