25252525000 has 192 divisors, whose sum is σ = 61028750160. Its totient is φ = 9792000000.

The previous prime is 25252524907. The next prime is 25252525009. The reversal of 25252525000 is 52525252.

It can be written as a sum of positive squares in 24 ways, for example, as 12218649444 + 13033875556 = 110538^2 + 114166^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25252525000.

It is not an unprimeable number, because it can be changed into a prime (25252525009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184324932 + ... + 184325068.

Almost surely, 2^25252525000 is an apocalyptic number.

25252525000 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 25252525000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30514375080).

25252525000 is an abundant number, since it is smaller than the sum of its proper divisors (35776225160).

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

25252525000 is a wasteful number, since it uses less digits than its factorization.

25252525000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The spelling of 25252525000 in words is "twenty-five billion, two hundred fifty-two million, five hundred twenty-five thousand".