525664423 has 2 divisors, whose sum is σ = 525664424. Its totient is φ = 525664422.

The previous prime is 525664421. The next prime is 525664483. The reversal of 525664423 is 324466525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525664423 - 2¹ = 525664421 is a prime.

Together with 525664421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525664421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262832211 + 262832212.

It is an arithmetic number, because the mean of its divisors is an integer number (262832212).

Almost surely, 2^525664423 is an apocalyptic number.

525664423 is a deficient number, since it is larger than the sum of its proper divisors (1).

525664423 is an equidigital number, since it uses as much as digits as its factorization.

525664423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 37.

The square root of 525664423 is about 22927.3727888740. The cubic root of 525664423 is about 807.0544967233.

The spelling of 525664423 in words is "five hundred twenty-five million, six hundred sixty-four thousand, four hundred twenty-three".