25704506486 has 4 divisors (see below), whose sum is σ = 38556759732. Its totient is φ = 12852253242.

The previous prime is 25704506483. The next prime is 25704506507. The reversal of 25704506486 is 68460540752.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25704506486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25704506483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6426126620 + ... + 6426126623.

It is an arithmetic number, because the mean of its divisors is an integer number (9639189933).

Almost surely, 2^25704506486 is an apocalyptic number.

25704506486 is a deficient number, since it is larger than the sum of its proper divisors (12852253246).

25704506486 is a wasteful number, since it uses less digits than its factorization.

25704506486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12852253245.

The product of its (nonzero) digits is 1612800, while the sum is 47.

The spelling of 25704506486 in words is "twenty-five billion, seven hundred four million, five hundred six thousand, four hundred eighty-six".