21325014 has 24 divisors (see below), whose sum is σ = 46406880. Its totient is φ = 7077168.

The previous prime is 21325013. The next prime is 21325037. The reversal of 21325014 is 41052312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21325013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1824 + ... + 6780.

It is an arithmetic number, because the mean of its divisors is an integer number (1933620).

Almost surely, 2^21325014 is an apocalyptic number.

21325014 is an abundant number, since it is smaller than the sum of its proper divisors (25081866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21325014 is a wasteful number, since it uses less digits than its factorization.

21325014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204 (or 5201 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 21325014 is about 4617.9014714478. The cubic root of 21325014 is about 277.3084531556.

Adding to 21325014 its reverse (41052312), we get a palindrome (62377326).

The spelling of 21325014 in words is "twenty-one million, three hundred twenty-five thousand, fourteen".