25540056 has 64 divisors (see below), whose sum is σ = 71359200. Its totient is φ = 8463744.

The previous prime is 25540043. The next prime is 25540061. The reversal of 25540056 is 65004552.

25540056 is a `hidden beast` number, since 255 + 400 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 68286 + ... + 68658.

Almost surely, 2^25540056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25540056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35679600).

25540056 is an abundant number, since it is smaller than the sum of its proper divisors (45819144).

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

25540056 is a wasteful number, since it uses less digits than its factorization.

25540056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 25540056 is about 5053.7170478767. The cubic root of 25540056 is about 294.4923030417.

The spelling of 25540056 in words is "twenty-five million, five hundred forty thousand, fifty-six".