25142163222 has 32 divisors (see below), whose sum is σ = 54863205120. Its totient is φ = 7617785120.

The previous prime is 25142163217. The next prime is 25142163257. The reversal of 25142163222 is 22236124152.

It is a self number, because there is not a number n which added to its sum of digits gives 25142163222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550183 + ... + 594125.

It is an arithmetic number, because the mean of its divisors is an integer number (1714475160).

Almost surely, 2^25142163222 is an apocalyptic number.

25142163222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25142163222 is an abundant number, since it is smaller than the sum of its proper divisors (29721041898).

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

25142163222 is a wasteful number, since it uses less digits than its factorization.

25142163222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52628.

The product of its digits is 11520, while the sum is 30.

Adding to 25142163222 its reverse (22236124152), we get a palindrome (47378287374).

The spelling of 25142163222 in words is "twenty-five billion, one hundred forty-two million, one hundred sixty-three thousand, two hundred twenty-two".