25755505000 has 80 divisors (see below), whose sum is σ = 60943819860. Its totient is φ = 10200000000.

The previous prime is 25755504991. The next prime is 25755505007. The reversal of 25755505000 is 50555752.

It can be written as a sum of positive squares in 10 ways, for example, as 773173636 + 24982331364 = 27806^2 + 158058^2 .

It is not an unprimeable number, because it can be changed into a prime (25755505007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 479500 + ... + 530500.

Almost surely, 2^25755505000 is an apocalyptic number.

25755505000 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 25755505000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30471909930).

25755505000 is an abundant number, since it is smaller than the sum of its proper divisors (35188314860).

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

25755505000 is a wasteful number, since it uses less digits than its factorization.

25755505000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51128 (or 51109 counting only the distinct ones).

The product of its (nonzero) digits is 43750, while the sum is 34.

The spelling of 25755505000 in words is "twenty-five billion, seven hundred fifty-five million, five hundred five thousand".