21514466525 has 12 divisors (see below), whose sum is σ = 27130108800. Its totient is φ = 16919850480.

The previous prime is 21514466513. The next prime is 21514466527. The reversal of 21514466525 is 52566441512.

It is not a de Polignac number, because 21514466525 - 2⁴ = 21514466509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514466527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7291565 + ... + 7294514.

It is an arithmetic number, because the mean of its divisors is an integer number (2260842400).

Almost surely, 2^21514466525 is an apocalyptic number.

21514466525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21514466525 is a deficient number, since it is larger than the sum of its proper divisors (5615642275).

21514466525 is a wasteful number, since it uses less digits than its factorization.

21514466525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14586148 (or 14586143 counting only the distinct ones).

The product of its digits is 288000, while the sum is 41.

The spelling of 21514466525 in words is "twenty-one billion, five hundred fourteen million, four hundred sixty-six thousand, five hundred twenty-five".