21241032653625 has 32 divisors (see below), whose sum is σ = 35421417887232. Its totient is φ = 11304082944000.

The previous prime is 21241032653611. The next prime is 21241032653671. The reversal of 21241032653625 is 52635623014212.

It is not a de Polignac number, because 21241032653625 - 2⁷ = 21241032653497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60995656 + ... + 61342905.

It is an arithmetic number, because the mean of its divisors is an integer number (1106919308976).

Almost surely, 2^{21241032653625} is an apocalyptic number.

21241032653625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21241032653625 is a deficient number, since it is larger than the sum of its proper divisors (14180385233607).

21241032653625 is a wasteful number, since it uses less digits than its factorization.

21241032653625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122339042 (or 122339032 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 21241032653625 its reverse (52635623014212), we get a palindrome (73876655667837).

The spelling of 21241032653625 in words is "twenty-one trillion, two hundred forty-one billion, thirty-two million, six hundred fifty-three thousand, six hundred twenty-five".