12524782381 has 2 divisors, whose sum is σ = 12524782382. Its totient is φ = 12524782380.

The previous prime is 12524782367. The next prime is 12524782427. The reversal of 12524782381 is 18328742521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6732202500 + 5792579881 = 82050^2 + 76109^2 .

It is a cyclic number.

It is not a de Polignac number, because 12524782381 - 2²¹ = 12522685229 is a prime.

It is a super-2 number, since 2×12524782381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12524782321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6262391190 + 6262391191.

It is an arithmetic number, because the mean of its divisors is an integer number (6262391191).

Almost surely, 2^12524782381 is an apocalyptic number.

It is an amenable number.

12524782381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12524782381 is an equidigital number, since it uses as much as digits as its factorization.

12524782381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The spelling of 12524782381 in words is "twelve billion, five hundred twenty-four million, seven hundred eighty-two thousand, three hundred eighty-one".