525330257 has 4 divisors (see below), whose sum is σ = 525885936. Its totient is φ = 524774580.

The previous prime is 525330251. The next prime is 525330271. The reversal of 525330257 is 752033525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 525330257 - 2¹² = 525326161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525330251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276419 + ... + 278312.

It is an arithmetic number, because the mean of its divisors is an integer number (131471484).

Almost surely, 2^525330257 is an apocalyptic number.

It is an amenable number.

525330257 is a deficient number, since it is larger than the sum of its proper divisors (555679).

525330257 is an equidigital number, since it uses as much as digits as its factorization.

525330257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555678.

The product of its (nonzero) digits is 31500, while the sum is 32.

The square root of 525330257 is about 22920.0841403342. The cubic root of 525330257 is about 806.8834450480.

The spelling of 525330257 in words is "five hundred twenty-five million, three hundred thirty thousand, two hundred fifty-seven".