25903128259 has 4 divisors (see below), whose sum is σ = 27426841704. Its totient is φ = 24379414816.

The previous prime is 25903128227. The next prime is 25903128271. The reversal of 25903128259 is 95282130952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25903128259 - 2⁵ = 25903128227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25903128059) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 761856697 + ... + 761856730.

It is an arithmetic number, because the mean of its divisors is an integer number (6856710426).

Almost surely, 2^25903128259 is an apocalyptic number.

25903128259 is a deficient number, since it is larger than the sum of its proper divisors (1523713445).

25903128259 is a wasteful number, since it uses less digits than its factorization.

25903128259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523713444.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 25903128259 in words is "twenty-five billion, nine hundred three million, one hundred twenty-eight thousand, two hundred fifty-nine".