25621260 has 96 divisors (see below), whose sum is σ = 83607552. Its totient is φ = 5740800.

The previous prime is 25621259. The next prime is 25621303. The reversal of 25621260 is 6212652.

It is a self number, because there is not a number n which added to its sum of digits gives 25621260.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21685 + ... + 22835.

It is an arithmetic number, because the mean of its divisors is an integer number (870912).

Almost surely, 2^25621260 is an apocalyptic number.

25621260 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 25621260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41803776).

25621260 is an abundant number, since it is smaller than the sum of its proper divisors (57986292).

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

25621260 is a wasteful number, since it uses less digits than its factorization.

25621260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25621260 is about 5061.7447584800. The cubic root of 25621260 is about 294.8040832643.

The spelling of 25621260 in words is "twenty-five million, six hundred twenty-one thousand, two hundred sixty".