12521042570 has 16 divisors (see below), whose sum is σ = 22625577288. Its totient is φ = 4988928000.

The previous prime is 12521042551. The next prime is 12521042647. The reversal of 12521042570 is 7524012521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12424000369 + 97042201 = 111463^2 + 9851^2 .

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, 2433431 + ... + 2438570.

Almost surely, 2^12521042570 is an apocalyptic number.

12521042570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12521042570 is a deficient number, since it is larger than the sum of its proper divisors (10104534718).

12521042570 is a wasteful number, since it uses less digits than its factorization.

12521042570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872265.

The product of its (nonzero) digits is 5600, while the sum is 29.

The spelling of 12521042570 in words is "twelve billion, five hundred twenty-one million, forty-two thousand, five hundred seventy".