25260878244 has 96 divisors (see below), whose sum is σ = 68365722880. Its totient is φ = 7110125568.

The previous prime is 25260878197. The next prime is 25260878297. The reversal of 25260878244 is 44287806252.

It is a super-2 number, since 2×25260878244² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25260878193 and 25260878202.

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 31 ways as a sum of consecutive naturals, for example, 6700392 + ... + 6704160.

Almost surely, 2^25260878244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25260878244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34182861440).

25260878244 is an abundant number, since it is smaller than the sum of its proper divisors (43104844636).

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

25260878244 is a wasteful number, since it uses less digits than its factorization.

25260878244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949 (or 4947 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 48.

The spelling of 25260878244 in words is "twenty-five billion, two hundred sixty million, eight hundred seventy-eight thousand, two hundred forty-four".