23523252521 has 2 divisors, whose sum is σ = 23523252522. Its totient is φ = 23523252520.

The previous prime is 23523252457. The next prime is 23523252539. The reversal of 23523252521 is 12525232532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20776339600 + 2746912921 = 144140^2 + 52411^2 .

It is a cyclic number.

It is not a de Polignac number, because 23523252521 - 2⁶ = 23523252457 is a prime.

It is not a weakly prime, because it can be changed into another prime (23523252421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11761626260 + 11761626261.

It is an arithmetic number, because the mean of its divisors is an integer number (11761626261).

Almost surely, 2^23523252521 is an apocalyptic number.

It is an amenable number.

23523252521 is a deficient number, since it is larger than the sum of its proper divisors (1).

23523252521 is an equidigital number, since it uses as much as digits as its factorization.

23523252521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 32.

The spelling of 23523252521 in words is "twenty-three billion, five hundred twenty-three million, two hundred fifty-two thousand, five hundred twenty-one".