21795042525 has 24 divisors (see below), whose sum is σ = 38154147264. Its totient is φ = 10940256000.

The previous prime is 21795042517. The next prime is 21795042569. The reversal of 21795042525 is 52524059712.

It is not a de Polignac number, because 21795042525 - 2³ = 21795042517 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 8545801 + ... + 8548350.

It is an arithmetic number, because the mean of its divisors is an integer number (1589756136).

Almost surely, 2^21795042525 is an apocalyptic number.

21795042525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21795042525 is a deficient number, since it is larger than the sum of its proper divisors (16359104739).

21795042525 is a wasteful number, since it uses less digits than its factorization.

21795042525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17094181 (or 17094176 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 21795042525 in words is "twenty-one billion, seven hundred ninety-five million, forty-two thousand, five hundred twenty-five".