21500141343025 has 12 divisors (see below), whose sum is σ = 28063342385200. Its totient is φ = 16294843964880.

The previous prime is 21500141342963. The next prime is 21500141343059. The reversal of 21500141343025 is 52034314100512.

It is not a de Polignac number, because 21500141343025 - 2²¹ = 21500139245873 is a prime.

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, 22631727255 + ... + 22631728204.

Almost surely, 2^{21500141343025} is an apocalyptic number.

21500141343025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21500141343025 is a deficient number, since it is larger than the sum of its proper divisors (6563201042175).

21500141343025 is a wasteful number, since it uses less digits than its factorization.

21500141343025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45263455488 (or 45263455483 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 21500141343025 its reverse (52034314100512), we get a palindrome (73534455443537).

The spelling of 21500141343025 in words is "twenty-one trillion, five hundred billion, one hundred forty-one million, three hundred forty-three thousand, twenty-five".