21375201316425 has 48 divisors (see below), whose sum is σ = 40229311730688. Its totient is φ = 9913136833600.

The previous prime is 21375201316397. The next prime is 21375201316433. The reversal of 21375201316425 is 52461310257312.

It is not a de Polignac number, because 21375201316425 - 2⁶ = 21375201316361 is a prime.

It is a super-3 number, since 3×21375201316425³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 563227437 + ... + 563265386.

It is an arithmetic number, because the mean of its divisors is an integer number (838110661056).

Almost surely, 2^{21375201316425} is an apocalyptic number.

21375201316425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21375201316425 is a deficient number, since it is larger than the sum of its proper divisors (18854110414263).

21375201316425 is a wasteful number, since it uses less digits than its factorization.

21375201316425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126492870 (or 1126492865 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 21375201316425 in words is "twenty-one trillion, three hundred seventy-five billion, two hundred one million, three hundred sixteen thousand, four hundred twenty-five".