25805984475 has 48 divisors (see below), whose sum is σ = 44937338112. Its totient is φ = 13041663360.

The previous prime is 25805984467. The next prime is 25805984483. The reversal of 25805984475 is 57448950852.

It is an interprime number because it is at equal distance from previous prime (25805984467) and next prime (25805984483).

It is not a de Polignac number, because 25805984475 - 2³ = 25805984467 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 114669 + ... + 254481.

It is an arithmetic number, because the mean of its divisors is an integer number (936194544).

Almost surely, 2^25805984475 is an apocalyptic number.

25805984475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25805984475 is a deficient number, since it is larger than the sum of its proper divisors (19131353637).

25805984475 is a wasteful number, since it uses less digits than its factorization.

25805984475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139956 (or 139951 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 57.

The spelling of 25805984475 in words is "twenty-five billion, eight hundred five million, nine hundred eighty-four thousand, four hundred seventy-five".