25864642227 has 8 divisors (see below), whose sum is σ = 34749443520. Its totient is φ = 17111467880.

The previous prime is 25864642217. The next prime is 25864642277. The reversal of 25864642227 is 72224646852.

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

It is a cyclic number.

It is not a de Polignac number, because 25864642227 - 2⁴ = 25864642211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25864642217) 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, 32906277 + ... + 32907062.

It is an arithmetic number, because the mean of its divisors is an integer number (4343680440).

Almost surely, 2^25864642227 is an apocalyptic number.

25864642227 is a deficient number, since it is larger than the sum of its proper divisors (8884801293).

25864642227 is a wasteful number, since it uses less digits than its factorization.

25864642227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65813473.

The product of its digits is 2580480, while the sum is 48.

The spelling of 25864642227 in words is "twenty-five billion, eight hundred sixty-four million, six hundred forty-two thousand, two hundred twenty-seven".