25222158 has 128 divisors (see below), whose sum is σ = 66662400. Its totient is φ = 6998400.

The previous prime is 25222151. The next prime is 25222159. The reversal of 25222158 is 85122252.

It is a super-3 number, since 3×25222158³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25222151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 413448 + ... + 413508.

It is an arithmetic number, because the mean of its divisors is an integer number (520800).

Almost surely, 2^25222158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25222158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33331200).

25222158 is an abundant number, since it is smaller than the sum of its proper divisors (41440242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25222158 is a wasteful number, since it uses less digits than its factorization.

25222158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 129 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 25222158 is about 5022.1666639011. The cubic root of 25222158 is about 293.2653461007.

The spelling of 25222158 in words is "twenty-five million, two hundred twenty-two thousand, one hundred fifty-eight".