21714325 has 12 divisors (see below), whose sum is σ = 27068580. Its totient is φ = 17279360.

The previous prime is 21714317. The next prime is 21714337. The reversal of 21714325 is 52341712.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 119716 + 21594609 = 346^2 + 4647^2 .

It is not a de Polignac number, because 21714325 - 2³ = 21714317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 21714325.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2721 + ... + 7129.

It is an arithmetic number, because the mean of its divisors is an integer number (2255715).

Almost surely, 2^21714325 is an apocalyptic number.

21714325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21714325 is a deficient number, since it is larger than the sum of its proper divisors (5354255).

21714325 is a wasteful number, since it uses less digits than its factorization.

21714325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616 (or 4611 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 21714325 is about 4659.8631954168. The cubic root of 21714325 is about 278.9858079565.

The spelling of 21714325 in words is "twenty-one million, seven hundred fourteen thousand, three hundred twenty-five".