25265864 has 32 divisors (see below), whose sum is σ = 51649920. Its totient is φ = 11516736.

The previous prime is 25265833. The next prime is 25265869. The reversal of 25265864 is 46856252.

It is not an unprimeable number, because it can be changed into a prime (25265869) 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, 7169 + ... + 10095.

It is an arithmetic number, because the mean of its divisors is an integer number (1614060).

Almost surely, 2^25265864 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 25265864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25824960).

25265864 is an abundant number, since it is smaller than the sum of its proper divisors (26384056).

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

25265864 is a wasteful number, since it uses less digits than its factorization.

25265864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029 (or 3025 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 25265864 is about 5026.5160896987. The cubic root of 25265864 is about 293.4346424630.

The spelling of 25265864 in words is "twenty-five million, two hundred sixty-five thousand, eight hundred sixty-four".