25671319221 has 8 divisors (see below), whose sum is σ = 34613015040. Its totient is φ = 16921918112.

The previous prime is 25671319213. The next prime is 25671319229. The reversal of 25671319221 is 12291317652.

It is an interprime number because it is at equal distance from previous prime (25671319213) and next prime (25671319229).

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 25671319221 - 2³ = 25671319213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25671319221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25671319229) 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, 48073365 + ... + 48073898.

It is an arithmetic number, because the mean of its divisors is an integer number (4326626880).

Almost surely, 2^25671319221 is an apocalyptic number.

It is an amenable number.

25671319221 is a deficient number, since it is larger than the sum of its proper divisors (8941695819).

25671319221 is an equidigital number, since it uses as much as digits as its factorization.

25671319221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96147355.

The product of its digits is 45360, while the sum is 39.

The spelling of 25671319221 in words is "twenty-five billion, six hundred seventy-one million, three hundred nineteen thousand, two hundred twenty-one".