25305055055 has 48 divisors (see below), whose sum is σ = 36910883520. Its totient is φ = 16574519808.

The previous prime is 25305055051. The next prime is 25305055123. The reversal of 25305055055 is 55055050352.

It is not a de Polignac number, because 25305055055 - 2² = 25305055051 is a prime.

It is a super-2 number, since 2×25305055055² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25305055051) 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, 4668707 + ... + 4674123.

It is an arithmetic number, because the mean of its divisors is an integer number (768976740).

Almost surely, 2^25305055055 is an apocalyptic number.

25305055055 is a deficient number, since it is larger than the sum of its proper divisors (11605828465).

25305055055 is a wasteful number, since it uses less digits than its factorization.

25305055055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6288 (or 6281 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 35.

The spelling of 25305055055 in words is "twenty-five billion, three hundred five million, fifty-five thousand, fifty-five".