21652125265 has 8 divisors (see below), whose sum is σ = 26311443840. Its totient is φ = 17102437872.

The previous prime is 21652125233. The next prime is 21652125331. The reversal of 21652125265 is 56252125612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21652125265 - 2⁵ = 21652125233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27407359 + ... + 27408148.

It is an arithmetic number, because the mean of its divisors is an integer number (3288930480).

Almost surely, 2^21652125265 is an apocalyptic number.

It is an amenable number.

21652125265 is a deficient number, since it is larger than the sum of its proper divisors (4659318575).

21652125265 is an equidigital number, since it uses as much as digits as its factorization.

21652125265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54815591.

The product of its digits is 72000, while the sum is 37.

The spelling of 21652125265 in words is "twenty-one billion, six hundred fifty-two million, one hundred twenty-five thousand, two hundred sixty-five".