25330857523 has 2 divisors, whose sum is σ = 25330857524. Its totient is φ = 25330857522.

The previous prime is 25330857491. The next prime is 25330857611. The reversal of 25330857523 is 32575803352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25330857523 - 2⁵ = 25330857491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25330857523.

It is not a weakly prime, because it can be changed into another prime (25330837523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12665428761 + 12665428762.

It is an arithmetic number, because the mean of its divisors is an integer number (12665428762).

Almost surely, 2^25330857523 is an apocalyptic number.

25330857523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25330857523 is an equidigital number, since it uses as much as digits as its factorization.

25330857523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 25330857523 in words is "twenty-five billion, three hundred thirty million, eight hundred fifty-seven thousand, five hundred twenty-three".