23540025563 has 2 divisors, whose sum is σ = 23540025564. Its totient is φ = 23540025562.

The previous prime is 23540025557. The next prime is 23540025583. The reversal of 23540025563 is 36552004532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23540025563 - 2⁶ = 23540025499 is a prime.

It is not a weakly prime, because it can be changed into another prime (23540025503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11770012781 + 11770012782.

It is an arithmetic number, because the mean of its divisors is an integer number (11770012782).

Almost surely, 2^23540025563 is an apocalyptic number.

23540025563 is a deficient number, since it is larger than the sum of its proper divisors (1).

23540025563 is an equidigital number, since it uses as much as digits as its factorization.

23540025563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 23540025563 in words is "twenty-three billion, five hundred forty million, twenty-five thousand, five hundred sixty-three".