21250252460414 has 32 divisors (see below), whose sum is σ = 33340903801920. Its totient is φ = 10158051774816.

The previous prime is 21250252460341. The next prime is 21250252460453. The reversal of 21250252460414 is 41406425205212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48376352 + ... + 48813644.

It is an arithmetic number, because the mean of its divisors is an integer number (1041903243810).

Almost surely, 2^{21250252460414} is an apocalyptic number.

21250252460414 is a deficient number, since it is larger than the sum of its proper divisors (12090651341506).

21250252460414 is an equidigital number, since it uses as much as digits as its factorization.

21250252460414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439361 (or 439315 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 21250252460414 its reverse (41406425205212), we get a palindrome (62656677665626).

The spelling of 21250252460414 in words is "twenty-one trillion, two hundred fifty billion, two hundred fifty-two million, four hundred sixty thousand, four hundred fourteen".