25803078537 has 16 divisors (see below), whose sum is σ = 36085738752. Its totient is φ = 16381019520.

The previous prime is 25803078491. The next prime is 25803078557. The reversal of 25803078537 is 73587030852.

It is not a de Polignac number, because 25803078537 - 2⁶ = 25803078473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25803078557) 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, 2467764 + ... + 2478197.

It is an arithmetic number, because the mean of its divisors is an integer number (2255358672).

Almost surely, 2^25803078537 is an apocalyptic number.

It is an amenable number.

25803078537 is a deficient number, since it is larger than the sum of its proper divisors (10282660215).

25803078537 is a wasteful number, since it uses less digits than its factorization.

25803078537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946048.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 25803078537 in words is "twenty-five billion, eight hundred three million, seventy-eight thousand, five hundred thirty-seven".