25525560 has 64 divisors (see below), whose sum is σ = 78660000. Its totient is φ = 6621696.

The previous prime is 25525553. The next prime is 25525589. The reversal of 25525560 is 6552552.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1566 + ... + 7314.

Almost surely, 2^25525560 is an apocalyptic number.

25525560 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 25525560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39330000).

25525560 is an abundant number, since it is smaller than the sum of its proper divisors (53134440).

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

25525560 is a wasteful number, since it uses less digits than its factorization.

25525560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5800 (or 5796 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 25525560 is about 5052.2826524255. The cubic root of 25525560 is about 294.4365766129.

The spelling of 25525560 in words is "twenty-five million, five hundred twenty-five thousand, five hundred sixty".