25404128915 has 16 divisors (see below), whose sum is σ = 33288960096. Its totient is φ = 18457593600.

The previous prime is 25404128887. The next prime is 25404128917. The reversal of 25404128915 is 51982140452.

It is not a de Polignac number, because 25404128915 - 2⁶ = 25404128851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25404128917) 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 15 ways as a sum of consecutive naturals, for example, 170042 + ... + 282351.

It is an arithmetic number, because the mean of its divisors is an integer number (2080560006).

Almost surely, 2^25404128915 is an apocalyptic number.

25404128915 is a deficient number, since it is larger than the sum of its proper divisors (7884831181).

25404128915 is a wasteful number, since it uses less digits than its factorization.

25404128915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453430.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 25404128915 in words is "twenty-five billion, four hundred four million, one hundred twenty-eight thousand, nine hundred fifteen".