25705776 has 40 divisors (see below), whose sum is σ = 67103344. Its totient is φ = 8478720.

The previous prime is 25705759. The next prime is 25705777. The reversal of 25705776 is 67750752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25705777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896 + ... + 7416.

Almost surely, 2^25705776 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 25705776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33551672).

25705776 is an abundant number, since it is smaller than the sum of its proper divisors (41397568).

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

25705776 is a wasteful number, since it uses less digits than its factorization.

25705776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5629 (or 5623 counting only the distinct ones).

The product of its (nonzero) digits is 102900, while the sum is 39.

The square root of 25705776 is about 5070.0863897965. The cubic root of 25705776 is about 295.1278809730.

The spelling of 25705776 in words is "twenty-five million, seven hundred five thousand, seven hundred seventy-six".