21702038266225 has 12 divisors (see below), whose sum is σ = 26915560443184. Its totient is φ = 17358383520720.

The previous prime is 21702038266193. The next prime is 21702038266247. The reversal of 21702038266225 is 52266283020712.

It is not a de Polignac number, because 21702038266225 - 2⁵ = 21702038266193 is a prime.

It is a Duffinian 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, 81040959 + ... + 81308308.

Almost surely, 2^{21702038266225} is an apocalyptic number.

21702038266225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21702038266225 is a deficient number, since it is larger than the sum of its proper divisors (5213522176959).

21702038266225 is a wasteful number, since it uses less digits than its factorization.

21702038266225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162354624 (or 162354619 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 21702038266225 in words is "twenty-one trillion, seven hundred two billion, thirty-eight million, two hundred sixty-six thousand, two hundred twenty-five".