25105127320 has 128 divisors (see below), whose sum is σ = 69603287040. Its totient is φ = 7936058880.

The previous prime is 25105127309. The next prime is 25105127357. The reversal of 25105127320 is 2372150152.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3530889 + ... + 3537991.

It is an arithmetic number, because the mean of its divisors is an integer number (543775680).

Almost surely, 2^25105127320 is an apocalyptic number.

25105127320 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 25105127320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34801643520).

25105127320 is an abundant number, since it is smaller than the sum of its proper divisors (44498159720).

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

25105127320 is a wasteful number, since it uses less digits than its factorization.

25105127320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8105 (or 8101 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

Adding to 25105127320 its reverse (2372150152), we get a palindrome (27477277472).

The spelling of 25105127320 in words is "twenty-five billion, one hundred five million, one hundred twenty-seven thousand, three hundred twenty".