25265863 has 4 divisors (see below), whose sum is σ = 28875280. Its totient is φ = 21656448.

The previous prime is 25265833. The next prime is 25265869. The reversal of 25265863 is 36856252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25265863 - 2⁵ = 25265831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25265869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1804698 + ... + 1804711.

It is an arithmetic number, because the mean of its divisors is an integer number (7218820).

Almost surely, 2^25265863 is an apocalyptic number.

25265863 is a deficient number, since it is larger than the sum of its proper divisors (3609417).

25265863 is an equidigital number, since it uses as much as digits as its factorization.

25265863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609416.

The product of its digits is 86400, while the sum is 37.

The square root of 25265863 is about 5026.5159902262. The cubic root of 25265863 is about 293.4346385917.

It can be divided in two parts, 252 and 65863, that multiplied together give a square (16597476 = 4074²).

The spelling of 25265863 in words is "twenty-five million, two hundred sixty-five thousand, eight hundred sixty-three".