21414502225 has 12 divisors (see below), whose sum is σ = 26557199536. Its totient is φ = 17129526480.

The previous prime is 21414502211. The next prime is 21414502231. The reversal of 21414502225 is 52220541412.

It is a happy number.

It is not a de Polignac number, because 21414502225 - 2¹⁵ = 21414469457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21414502193 and 21414502202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178714 + ... + 273436.

Almost surely, 2^21414502225 is an apocalyptic number.

21414502225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21414502225 is a deficient number, since it is larger than the sum of its proper divisors (5142697311).

21414502225 is an equidigital number, since it uses as much as digits as its factorization.

21414502225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103776 (or 103771 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The spelling of 21414502225 in words is "twenty-one billion, four hundred fourteen million, five hundred two thousand, two hundred twenty-five".