25943442775 has 12 divisors (see below), whose sum is σ = 33279175800. Its totient is φ = 20039072480.

The previous prime is 25943442751. The next prime is 25943442787. The reversal of 25943442775 is 57724434952.

It is not a de Polignac number, because 25943442775 - 2²¹ = 25941345623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17891305 + ... + 17892754.

It is an arithmetic number, because the mean of its divisors is an integer number (2773264650).

Almost surely, 2^25943442775 is an apocalyptic number.

25943442775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25943442775 is a deficient number, since it is larger than the sum of its proper divisors (7335733025).

25943442775 is a wasteful number, since it uses less digits than its factorization.

25943442775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35784098 (or 35784093 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 52.

The spelling of 25943442775 in words is "twenty-five billion, nine hundred forty-three million, four hundred forty-two thousand, seven hundred seventy-five".