25525003049 has 16 divisors (see below), whose sum is σ = 31601297280. Its totient is φ = 20195594640.

The previous prime is 25525003019. The next prime is 25525003061. The reversal of 25525003049 is 94030052552.

It is not a de Polignac number, because 25525003049 - 2²⁸ = 25256567593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25525003019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814487 + ... + 845244.

It is an arithmetic number, because the mean of its divisors is an integer number (1975081080).

Almost surely, 2^25525003049 is an apocalyptic number.

It is an amenable number.

25525003049 is a deficient number, since it is larger than the sum of its proper divisors (6076294231).

25525003049 is an equidigital number, since it uses as much as digits as its factorization.

25525003049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659777 (or 1659751 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 25525003049 in words is "twenty-five billion, five hundred twenty-five million, three thousand, forty-nine".