25799901 has 4 divisors (see below), whose sum is σ = 34399872. Its totient is φ = 17199932.

The previous prime is 25799887. The next prime is 25799911. The reversal of 25799901 is 10999752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25799901 - 2¹¹ = 25797853 is a prime.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25799911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4299981 + ... + 4299986.

It is an arithmetic number, because the mean of its divisors is an integer number (8599968).

Almost surely, 2^25799901 is an apocalyptic number.

It is an amenable number.

25799901 is a deficient number, since it is larger than the sum of its proper divisors (8599971).

25799901 is an equidigital number, since it uses as much as digits as its factorization.

25799901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8599970.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 25799901 is about 5079.3602943678. The cubic root of 25799901 is about 295.4876584182.

The spelling of 25799901 in words is "twenty-five million, seven hundred ninety-nine thousand, nine hundred one".