25790459500 has 96 divisors (see below), whose sum is σ = 60770533824. Its totient is φ = 9505152000.

The previous prime is 25790459449. The next prime is 25790459509. The reversal of 25790459500 is 595409752.

It is a super-2 number, since 2×25790459500² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25790459509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3851155 + ... + 3857845.

It is an arithmetic number, because the mean of its divisors is an integer number (633026394).

Almost surely, 2^25790459500 is an apocalyptic number.

25790459500 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 25790459500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30385266912).

25790459500 is an abundant number, since it is smaller than the sum of its proper divisors (34980074324).

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

25790459500 is a wasteful number, since it uses less digits than its factorization.

25790459500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7316 (or 7304 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 46.

The spelling of 25790459500 in words is "twenty-five billion, seven hundred ninety million, four hundred fifty-nine thousand, five hundred".