383825257 has 2 divisors, whose sum is σ = 383825258. Its totient is φ = 383825256.

The previous prime is 383825191. The next prime is 383825293. The reversal of 383825257 is 752528383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236421376 + 147403881 = 15376^2 + 12141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-383825257 is a prime.

It is a super-2 number, since 2×383825257² = 294643655822232098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (383825557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191912628 + 191912629.

It is an arithmetic number, because the mean of its divisors is an integer number (191912629).

Almost surely, 2^383825257 is an apocalyptic number.

It is an amenable number.

383825257 is a deficient number, since it is larger than the sum of its proper divisors (1).

383825257 is an equidigital number, since it uses as much as digits as its factorization.

383825257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 43.

The square root of 383825257 is about 19591.4587767221. The cubic root of 383825257 is about 726.7379672437.

The spelling of 383825257 in words is "three hundred eighty-three million, eight hundred twenty-five thousand, two hundred fifty-seven".