25530260 has 72 divisors (see below), whose sum is σ = 65192064. Its totient is φ = 8225280.

The previous prime is 25530257. The next prime is 25530287. The reversal of 25530260 is 6203552.

It is a happy number.

It is a congruent number.

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, 40145 + ... + 40775.

Almost surely, 2^25530260 is an apocalyptic number.

25530260 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 25530260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32596032).

25530260 is an abundant number, since it is smaller than the sum of its proper divisors (39661804).

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

25530260 is a wasteful number, since it uses less digits than its factorization.

25530260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 25530260 is about 5052.7477673044. The cubic root of 25530260 is about 294.4546469574.

The spelling of 25530260 in words is "twenty-five million, five hundred thirty thousand, two hundred sixty".