21224088550725 has 12 divisors (see below), whose sum is σ = 35090493070656. Its totient is φ = 11319513893680.

The previous prime is 21224088550711. The next prime is 21224088550739. The reversal of 21224088550725 is 52705588042212.

It is an interprime number because it is at equal distance from previous prime (21224088550711) and next prime (21224088550739).

It is a de Polignac number, because none of the positive numbers 2^k-21224088550725 is a prime.

It is a congruent number.

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, 141493923597 + ... + 141493923746.

It is an arithmetic number, because the mean of its divisors is an integer number (2924207755888).

Almost surely, 2^{21224088550725} is an apocalyptic number.

21224088550725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21224088550725 is a deficient number, since it is larger than the sum of its proper divisors (13866404519931).

21224088550725 is a wasteful number, since it uses less digits than its factorization.

21224088550725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282987847356 (or 282987847351 counting only the distinct ones).

The product of its (nonzero) digits is 3584000, while the sum is 51.

The spelling of 21224088550725 in words is "twenty-one trillion, two hundred twenty-four billion, eighty-eight million, five hundred fifty thousand, seven hundred twenty-five".