25534252000 has 144 divisors (see below), whose sum is σ = 66217172112. Its totient is φ = 9675590400.

The previous prime is 25534251997. The next prime is 25534252043. The reversal of 25534252000 is 25243552.

It is a self number, because there is not a number n which added to its sum of digits gives 25534252000.

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, 1435159 + ... + 1452841.

It is an arithmetic number, because the mean of its divisors is an integer number (459841473).

Almost surely, 2^25534252000 is an apocalyptic number.

25534252000 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 25534252000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33108586056).

25534252000 is an abundant number, since it is smaller than the sum of its proper divisors (40682920112).

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

25534252000 is a wasteful number, since it uses less digits than its factorization.

25534252000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17746 (or 17709 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

Adding to 25534252000 its reverse (25243552), we get a palindrome (25559495552).

The spelling of 25534252000 in words is "twenty-five billion, five hundred thirty-four million, two hundred fifty-two thousand".