25881243807 has 32 divisors (see below), whose sum is σ = 36266630400. Its totient is φ = 16394450688.

The previous prime is 25881243793. The next prime is 25881243811. The reversal of 25881243807 is 70834218852.

It is not a de Polignac number, because 25881243807 - 2⁸ = 25881243551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25881243007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9482419 + ... + 9485147.

It is an arithmetic number, because the mean of its divisors is an integer number (1133332200).

Almost surely, 2^25881243807 is an apocalyptic number.

25881243807 is a deficient number, since it is larger than the sum of its proper divisors (10385386593).

25881243807 is a wasteful number, since it uses less digits than its factorization.

25881243807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4455.

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 25881243807 in words is "twenty-five billion, eight hundred eighty-one million, two hundred forty-three thousand, eight hundred seven".