25323019568 has 80 divisors (see below), whose sum is σ = 61200059136. Its totient is φ = 9861246720.

The previous prime is 25323019523. The next prime is 25323019571. The reversal of 25323019568 is 86591032352.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3449630 + ... + 3456962.

Almost surely, 2^25323019568 is an apocalyptic number.

25323019568 is a gapful number since it is divisible by the number (28) 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 25323019568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30600029568).

25323019568 is an abundant number, since it is smaller than the sum of its proper divisors (35877039568).

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

25323019568 is a wasteful number, since it uses less digits than its factorization.

25323019568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162 (or 10156 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 25323019568 in words is "twenty-five billion, three hundred twenty-three million, nineteen thousand, five hundred sixty-eight".