21325627 has 4 divisors (see below), whose sum is σ = 21347536. Its totient is φ = 21303720.

The previous prime is 21325607. The next prime is 21325637. The reversal of 21325627 is 72652312.

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 21325627 - 2²³ = 12937019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21325595 and 21325604.

It is not an unprimeable number, because it can be changed into a prime (21325607) 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, 9423 + ... + 11464.

It is an arithmetic number, because the mean of its divisors is an integer number (5336884).

Almost surely, 2^21325627 is an apocalyptic number.

21325627 is a deficient number, since it is larger than the sum of its proper divisors (21909).

21325627 is a wasteful number, since it uses less digits than its factorization.

21325627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21908.

The product of its digits is 5040, while the sum is 28.

The square root of 21325627 is about 4617.9678431102. The cubic root of 21325627 is about 277.3111102614.

Adding to 21325627 its reverse (72652312), we get a palindrome (93977939).

It can be divided in two parts, 21325 and 627, that added together give a cube (21952 = 28³).

The spelling of 21325627 in words is "twenty-one million, three hundred twenty-five thousand, six hundred twenty-seven".