25564233 has 4 divisors (see below), whose sum is σ = 34085648. Its totient is φ = 17042820.

The previous prime is 25564229. The next prime is 25564237. The reversal of 25564233 is 33246552.

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 an interprime number because it is at equal distance from previous prime (25564229) and next prime (25564237).

It is not a de Polignac number, because 25564233 - 2² = 25564229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25564233.

It is not an unprimeable number, because it can be changed into a prime (25564237) 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, 4260703 + ... + 4260708.

It is an arithmetic number, because the mean of its divisors is an integer number (8521412).

Almost surely, 2^25564233 is an apocalyptic number.

It is an amenable number.

25564233 is a deficient number, since it is larger than the sum of its proper divisors (8521415).

25564233 is an equidigital number, since it uses as much as digits as its factorization.

25564233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8521414.

The product of its digits is 21600, while the sum is 30.

The square root of 25564233 is about 5056.1084838045. The cubic root of 25564233 is about 294.5851988827.

The spelling of 25564233 in words is "twenty-five million, five hundred sixty-four thousand, two hundred thirty-three".