25558122 has 8 divisors (see below), whose sum is σ = 51116256. Its totient is φ = 8519372.

The previous prime is 25558121. The next prime is 25558139. The reversal of 25558122 is 22185552.

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

25558122 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 25558122.

It is not an unprimeable number, because it can be changed into a prime (25558121) 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, 2129838 + ... + 2129849.

It is an arithmetic number, because the mean of its divisors is an integer number (6389532).

Almost surely, 2^25558122 is an apocalyptic number.

25558122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25558122 is a wasteful number, since it uses less digits than its factorization.

25558122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259692.

The product of its digits is 8000, while the sum is 30.

The square root of 25558122 is about 5055.5041291646. The cubic root of 25558122 is about 294.5617239804.

The spelling of 25558122 in words is "twenty-five million, five hundred fifty-eight thousand, one hundred twenty-two".