25540983814 has 16 divisors (see below), whose sum is σ = 40374650880. Its totient is φ = 12084326280.

The previous prime is 25540983803. The next prime is 25540983817. The reversal of 25540983814 is 41838904552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25540983817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356622 + ... + 422209.

It is an arithmetic number, because the mean of its divisors is an integer number (2523415680).

Almost surely, 2^25540983814 is an apocalyptic number.

25540983814 is a deficient number, since it is larger than the sum of its proper divisors (14833667066).

25540983814 is a wasteful number, since it uses less digits than its factorization.

25540983814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779715.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 25540983814 in words is "twenty-five billion, five hundred forty million, nine hundred eighty-three thousand, eight hundred fourteen".