21300555345025 has 48 divisors (see below), whose sum is σ = 30523038150528. Its totient is φ = 14573242496000.

The previous prime is 21300555344989. The next prime is 21300555345029. The reversal of 21300555345025 is 52054355500312.

It is not a de Polignac number, because 21300555345025 - 2¹¹ = 21300555342977 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21300555345029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8945124 + ... + 11073226.

It is an arithmetic number, because the mean of its divisors is an integer number (635896628136).

Almost surely, 2^{21300555345025} is an apocalyptic number.

21300555345025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21300555345025 is a deficient number, since it is larger than the sum of its proper divisors (9222482805503).

21300555345025 is a wasteful number, since it uses less digits than its factorization.

21300555345025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130282 (or 2130277 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 40.

The spelling of 21300555345025 in words is "twenty-one trillion, three hundred billion, five hundred fifty-five million, three hundred forty-five thousand, twenty-five".