100525210640689 has 2 divisors, whose sum is σ = 100525210640690. Its totient is φ = 100525210640688.

The previous prime is 100525210640653. The next prime is 100525210640737. The reversal of 100525210640689 is 986046012525001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92655390338289 + 7869820302400 = 9625767^2 + 2805320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100525210640689 is a prime.

It is not a weakly prime, because it can be changed into another prime (100525210640989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50262605320344 + 50262605320345.

It is an arithmetic number, because the mean of its divisors is an integer number (50262605320345).

Almost surely, 2^{100525210640689} is an apocalyptic number.

It is an amenable number.

100525210640689 is a deficient number, since it is larger than the sum of its proper divisors (1).

100525210640689 is an equidigital number, since it uses as much as digits as its factorization.

100525210640689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 100525210640689 in words is "one hundred trillion, five hundred twenty-five billion, two hundred ten million, six hundred forty thousand, six hundred eighty-nine".