21674314525 has 12 divisors (see below), whose sum is σ = 26879912884. Its totient is φ = 17337024000.

The previous prime is 21674314483. The next prime is 21674314537. The reversal of 21674314525 is 52541347612.

It can be written as a sum of positive squares in 6 ways, for example, as 19131876 + 21655182649 = 4374^2 + 147157^2 .

It is not a de Polignac number, because 21674314525 - 2¹³ = 21674306333 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 133645 + ... + 247405.

Almost surely, 2^21674314525 is an apocalyptic number.

21674314525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21674314525 is a deficient number, since it is larger than the sum of its proper divisors (5205598359).

21674314525 is a wasteful number, since it uses less digits than its factorization.

21674314525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121392 (or 121387 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The spelling of 21674314525 in words is "twenty-one billion, six hundred seventy-four million, three hundred fourteen thousand, five hundred twenty-five".