25864998 has 32 divisors (see below), whose sum is σ = 53450496. Its totient is φ = 8337888.

The previous prime is 25864997. The next prime is 25865011. The reversal of 25864998 is 89946852.

It is a self number, because there is not a number n which added to its sum of digits gives 25864998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25864997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58165 + ... + 58607.

It is an arithmetic number, because the mean of its divisors is an integer number (1670328).

Almost surely, 2^25864998 is an apocalyptic number.

25864998 is an abundant number, since it is smaller than the sum of its proper divisors (27585498).

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

25864998 is a wasteful number, since it uses less digits than its factorization.

25864998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748.

The product of its digits is 1244160, while the sum is 51.

The square root of 25864998 is about 5085.7642493533. The cubic root of 25864998 is about 295.7359695111.

It can be divided in two parts, 25864 and 998, that added together give a palindrome (26862).

The spelling of 25864998 in words is "twenty-five million, eight hundred sixty-four thousand, nine hundred ninety-eight".