10001525641 has 2 divisors, whose sum is σ = 10001525642. Its totient is φ = 10001525640.

The previous prime is 10001525623. The next prime is 10001525687. The reversal of 10001525641 is 14652510001.

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., 9999200016 + 2325625 = 99996^2 + 1525^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001525641 - 2¹¹ = 10001523593 is a prime.

It is not a weakly prime, because it can be changed into another prime (10001525621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000762820 + 5000762821.

It is an arithmetic number, because the mean of its divisors is an integer number (5000762821).

Almost surely, 2^10001525641 is an apocalyptic number.

It is an amenable number.

10001525641 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001525641 is an equidigital number, since it uses as much as digits as its factorization.

10001525641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 10001525641 in words is "ten billion, one million, five hundred twenty-five thousand, six hundred forty-one".