25222265 has 4 divisors (see below), whose sum is σ = 30266724. Its totient is φ = 20177808.

The previous prime is 25222259. The next prime is 25222277. The reversal of 25222265 is 56222252.

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 2972176 + 22250089 = 1724^2 + 4717^2 .

It is a cyclic number.

It is not a de Polignac number, because 25222265 - 2¹⁰ = 25221241 is a prime.

It is a Duffinian number.

It is a Curzon 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, 2522222 + ... + 2522231.

It is an arithmetic number, because the mean of its divisors is an integer number (7566681).

Almost surely, 2^25222265 is an apocalyptic number.

It is an amenable number.

25222265 is a deficient number, since it is larger than the sum of its proper divisors (5044459).

25222265 is an equidigital number, since it uses as much as digits as its factorization.

25222265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5044458.

The product of its digits is 4800, while the sum is 26.

The square root of 25222265 is about 5022.1773166626. The cubic root of 25222265 is about 293.2657608068.

The spelling of 25222265 in words is "twenty-five million, two hundred twenty-two thousand, two hundred sixty-five".