25228222 has 8 divisors (see below), whose sum is σ = 38115000. Its totient is φ = 12523224.

The previous prime is 25228211. The next prime is 25228241. The reversal of 25228222 is 22282252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent 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, 45097 + ... + 45652.

It is an arithmetic number, because the mean of its divisors is an integer number (4764375).

Almost surely, 2^25228222 is an apocalyptic number.

25228222 is a deficient number, since it is larger than the sum of its proper divisors (12886778).

25228222 is a wasteful number, since it uses less digits than its factorization.

25228222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90890.

The product of its digits is 2560, while the sum is 25.

The square root of 25228222 is about 5022.7703511110. The cubic root of 25228222 is about 293.2888468463.

The spelling of 25228222 in words is "twenty-five million, two hundred twenty-eight thousand, two hundred twenty-two".