25252780344 has 96 divisors (see below), whose sum is σ = 69645705360. Its totient is φ = 7624488960.

The previous prime is 25252780331. The next prime is 25252780363. The reversal of 25252780344 is 44308725252.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25252780296 and 25252780305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 788712 + ... + 820104.

Almost surely, 2^25252780344 is an apocalyptic number.

25252780344 is a gapful number since it is divisible by the number (24) 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 25252780344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34822852680).

25252780344 is an abundant number, since it is smaller than the sum of its proper divisors (44392925016).

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

25252780344 is a wasteful number, since it uses less digits than its factorization.

25252780344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31701 (or 31686 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 42.

The spelling of 25252780344 in words is "twenty-five billion, two hundred fifty-two million, seven hundred eighty thousand, three hundred forty-four".