25884865 has 4 divisors (see below), whose sum is σ = 31061844. Its totient is φ = 20707888.

The previous prime is 25884857. The next prime is 25884871. The reversal of 25884865 is 56848852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16842816 + 9042049 = 4104^2 + 3007^2 .

It is a cyclic number.

It is not a de Polignac number, because 25884865 - 2³ = 25884857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2588482 + ... + 2588491.

It is an arithmetic number, because the mean of its divisors is an integer number (7765461).

Almost surely, 2^25884865 is an apocalyptic number.

It is an amenable number.

25884865 is a deficient number, since it is larger than the sum of its proper divisors (5176979).

25884865 is an equidigital number, since it uses as much as digits as its factorization.

25884865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176978.

The product of its digits is 614400, while the sum is 46.

The square root of 25884865 is about 5087.7170715361. The cubic root of 25884865 is about 295.8116687611.

The spelling of 25884865 in words is "twenty-five million, eight hundred eighty-four thousand, eight hundred sixty-five".