21514243134125 has 32 divisors (see below), whose sum is σ = 30689000010240. Its totient is φ = 14750920800000.

The previous prime is 21514243134077. The next prime is 21514243134173. The reversal of 21514243134125 is 52143134241512.

It is an interprime number because it is at equal distance from previous prime (21514243134077) and next prime (21514243134173).

It is a de Polignac number, because none of the positive numbers 2^k-21514243134125 is a prime.

It is a congruent number.

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, 6188000 + ... + 9017750.

It is an arithmetic number, because the mean of its divisors is an integer number (959031250320).

Almost surely, 2^{21514243134125} is an apocalyptic number.

21514243134125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21514243134125 is a deficient number, since it is larger than the sum of its proper divisors (9174756876115).

21514243134125 is an equidigital number, since it uses as much as digits as its factorization.

21514243134125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838462 (or 2838452 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

Adding to 21514243134125 its reverse (52143134241512), we get a palindrome (73657377375637).

The spelling of 21514243134125 in words is "twenty-one trillion, five hundred fourteen billion, two hundred forty-three million, one hundred thirty-four thousand, one hundred twenty-five".