25505505030 has 64 divisors (see below), whose sum is σ = 61421068800. Its totient is φ = 6778421760.

The previous prime is 25505505029. The next prime is 25505505041. The reversal of 25505505030 is 3050550552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16359391 + ... + 16360949.

It is an arithmetic number, because the mean of its divisors is an integer number (959704200).

Almost surely, 2^25505505030 is an apocalyptic number.

25505505030 is an abundant number, since it is smaller than the sum of its proper divisors (35915563770).

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

25505505030 is a wasteful number, since it uses less digits than its factorization.

25505505030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069.

The product of its (nonzero) digits is 18750, while the sum is 30.

The spelling of 25505505030 in words is "twenty-five billion, five hundred five million, five hundred five thousand, thirty".