21625901077265 has 8 divisors (see below), whose sum is σ = 26081488737600. Its totient is φ = 17213782565232.

The previous prime is 21625901077259. The next prime is 21625901077267. The reversal of 21625901077265 is 56277010952612.

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 21625901077265 - 2⁶ = 21625901077201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21625901077267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10867285979 + ... + 10867287968.

It is an arithmetic number, because the mean of its divisors is an integer number (3260186092200).

Almost surely, 2^{21625901077265} is an apocalyptic number.

It is an amenable number.

21625901077265 is a deficient number, since it is larger than the sum of its proper divisors (4455587660335).

21625901077265 is a wasteful number, since it uses less digits than its factorization.

21625901077265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21734574151.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 21625901077265 in words is "twenty-one trillion, six hundred twenty-five billion, nine hundred one million, seventy-seven thousand, two hundred sixty-five".