25985040182 has 4 divisors (see below), whose sum is σ = 38977560276. Its totient is φ = 12992520090.

The previous prime is 25985040163. The next prime is 25985040187. The reversal of 25985040182 is 28104058952.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25985040187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6496260044 + ... + 6496260047.

It is an arithmetic number, because the mean of its divisors is an integer number (9744390069).

Almost surely, 2^25985040182 is an apocalyptic number.

25985040182 is a deficient number, since it is larger than the sum of its proper divisors (12992520094).

25985040182 is a wasteful number, since it uses less digits than its factorization.

25985040182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12992520093.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 25985040182 in words is "twenty-five billion, nine hundred eighty-five million, forty thousand, one hundred eighty-two".