25221327 has 4 divisors (see below), whose sum is σ = 33628440. Its totient is φ = 16814216.

The previous prime is 25221323. The next prime is 25221337. The reversal of 25221327 is 72312252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25221327 - 2² = 25221323 is a prime.

It is a super-2 number, since 2×25221327² = 1272230671281858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25221297 and 25221306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25221323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4203552 + ... + 4203557.

It is an arithmetic number, because the mean of its divisors is an integer number (8407110).

Almost surely, 2^25221327 is an apocalyptic number.

25221327 is a deficient number, since it is larger than the sum of its proper divisors (8407113).

25221327 is an equidigital number, since it uses as much as digits as its factorization.

25221327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407112.

The product of its digits is 1680, while the sum is 24.

The square root of 25221327 is about 5022.0839300036. The cubic root of 25221327 is about 293.2621253060.

Adding to 25221327 its reverse (72312252), we get a palindrome (97533579).

The spelling of 25221327 in words is "twenty-five million, two hundred twenty-one thousand, three hundred twenty-seven".