25222859 has 4 divisors (see below), whose sum is σ = 25698816. Its totient is φ = 24746904.

The previous prime is 25222807. The next prime is 25222877. The reversal of 25222859 is 95822252.

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 25222859 - 2¹⁶ = 25157323 is a prime.

It is a super-2 number, since 2×25222859² = 1272385232267762, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (25222159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237899 + ... + 238004.

It is an arithmetic number, because the mean of its divisors is an integer number (6424704).

Almost surely, 2^25222859 is an apocalyptic number.

25222859 is a deficient number, since it is larger than the sum of its proper divisors (475957).

25222859 is an equidigital number, since it uses as much as digits as its factorization.

25222859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475956.

The product of its digits is 28800, while the sum is 35.

The square root of 25222859 is about 5022.2364540113. The cubic root of 25222859 is about 293.2680629856.

The spelling of 25222859 in words is "twenty-five million, two hundred twenty-two thousand, eight hundred fifty-nine".