12524532021 has 6 divisors (see below), whose sum is σ = 18090990710. Its totient is φ = 8349688008.

The previous prime is 12524532011. The next prime is 12524532023. The reversal of 12524532021 is 12023542521.

12524532021 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 453 + 202 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12488062500 + 36469521 = 111750^2 + 6039^2 .

It is not a de Polignac number, because 12524532021 - 2¹¹ = 12524529973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12524532023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 695807326 + ... + 695807343.

Almost surely, 2^12524532021 is an apocalyptic number.

It is an amenable number.

12524532021 is a deficient number, since it is larger than the sum of its proper divisors (5566458689).

12524532021 is a wasteful number, since it uses less digits than its factorization.

12524532021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391614675 (or 1391614672 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 12524532021 in words is "twelve billion, five hundred twenty-four million, five hundred thirty-two thousand, twenty-one".