25402560 has 112 divisors (see below), whose sum is σ = 82515456. Its totient is φ = 6618112.

The previous prime is 25402541. The next prime is 25402571. The reversal of 25402560 is 6520452.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25402560.

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, 44839 + ... + 45401.

Almost surely, 2^25402560 is an apocalyptic number.

25402560 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 25402560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41257728).

25402560 is an abundant number, since it is smaller than the sum of its proper divisors (57112896).

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

25402560 is a wasteful number, since it uses less digits than its factorization.

25402560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 25402560 is about 5040.0952371954. The cubic root of 25402560 is about 293.9628811484.

The spelling of 25402560 in words is "twenty-five million, four hundred two thousand, five hundred sixty".