25124222320 has 80 divisors (see below), whose sum is σ = 59836170240. Its totient is φ = 9805485312.

The previous prime is 25124222303. The next prime is 25124222341. The reversal of 25124222320 is 2322242152.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3735921 + ... + 3742639.

It is an arithmetic number, because the mean of its divisors is an integer number (747952128).

Almost surely, 2^25124222320 is an apocalyptic number.

25124222320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25124222320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29918085120).

25124222320 is an abundant number, since it is smaller than the sum of its proper divisors (34711947920).

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

25124222320 is a wasteful number, since it uses less digits than its factorization.

25124222320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7862 (or 7856 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 25124222320 its reverse (2322242152), we get a palindrome (27446464472).

The spelling of 25124222320 in words is "twenty-five billion, one hundred twenty-four million, two hundred twenty-two thousand, three hundred twenty".