25984278213 has 8 divisors (see below), whose sum is σ = 35763307776. Its totient is φ = 16764050400.

The previous prime is 25984278209. The next prime is 25984278217. The reversal of 25984278213 is 31287248952.

It is an interprime number because it is at equal distance from previous prime (25984278209) and next prime (25984278217).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25984278213 - 2² = 25984278209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25984278217) 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, 139700328 + ... + 139700513.

It is an arithmetic number, because the mean of its divisors is an integer number (4470413472).

Almost surely, 2^25984278213 is an apocalyptic number.

It is an amenable number.

25984278213 is a deficient number, since it is larger than the sum of its proper divisors (9779029563).

25984278213 is a wasteful number, since it uses less digits than its factorization.

25984278213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279400875.

The product of its digits is 1935360, while the sum is 51.

The spelling of 25984278213 in words is "twenty-five billion, nine hundred eighty-four million, two hundred seventy-eight thousand, two hundred thirteen".