25161422 has 16 divisors (see below), whose sum is σ = 44340912. Its totient is φ = 10557120.

The previous prime is 25161401. The next prime is 25161439. The reversal of 25161422 is 22416152.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43703 + ... + 44274.

It is an arithmetic number, because the mean of its divisors is an integer number (2771307).

Almost surely, 2^25161422 is an apocalyptic number.

25161422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25161422 is a deficient number, since it is larger than the sum of its proper divisors (19179490).

25161422 is a wasteful number, since it uses less digits than its factorization.

25161422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88003.

The product of its digits is 960, while the sum is 23.

The square root of 25161422 is about 5016.1162267236. The cubic root of 25161422 is about 293.0297585356.

Adding to 25161422 its reverse (22416152), we get a palindrome (47577574).

The spelling of 25161422 in words is "twenty-five million, one hundred sixty-one thousand, four hundred twenty-two".