25505305000 has 80 divisors (see below), whose sum is σ = 68296013280. Its totient is φ = 8744664000.

The previous prime is 25505304967. The next prime is 25505305019. The reversal of 25505305000 is 50350552.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 329362 + ... + 399361.

It is an arithmetic number, because the mean of its divisors is an integer number (853700166).

Almost surely, 2^25505305000 is an apocalyptic number.

25505305000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25505305000 is an abundant number, since it is smaller than the sum of its proper divisors (42790708280).

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

25505305000 is an equidigital number, since it uses as much as digits as its factorization.

25505305000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728756 (or 728737 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 25.

Adding to 25505305000 its reverse (50350552), we get a palindrome (25555655552).

The spelling of 25505305000 in words is "twenty-five billion, five hundred five million, three hundred five thousand".