12521900285 has 8 divisors (see below), whose sum is σ = 15544428120. Its totient is φ = 9672088384.

The previous prime is 12521900267. The next prime is 12521900309. The reversal of 12521900285 is 58200912521.

It can be written as a sum of positive squares in 4 ways, for example, as 737881 + 12521162404 = 859^2 + 111898^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12521900285 - 2⁶ = 12521900221 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 43178822 + ... + 43179111.

It is an arithmetic number, because the mean of its divisors is an integer number (1943053515).

Almost surely, 2^12521900285 is an apocalyptic number.

It is an amenable number.

12521900285 is a deficient number, since it is larger than the sum of its proper divisors (3022527835).

12521900285 is an equidigital number, since it uses as much as digits as its factorization.

12521900285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86357967.

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 12521900285 in words is "twelve billion, five hundred twenty-one million, nine hundred thousand, two hundred eighty-five".