255825397 has 2 divisors, whose sum is σ = 255825398. Its totient is φ = 255825396.

The previous prime is 255825373. The next prime is 255825413. The reversal of 255825397 is 793528552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167728401 + 88096996 = 12951^2 + 9386^2 .

It is a cyclic number.

It is not a de Polignac number, because 255825397 - 2¹¹ = 255823349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255822397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127912698 + 127912699.

It is an arithmetic number, because the mean of its divisors is an integer number (127912699).

Almost surely, 2^255825397 is an apocalyptic number.

It is an amenable number.

255825397 is a deficient number, since it is larger than the sum of its proper divisors (1).

255825397 is an equidigital number, since it uses as much as digits as its factorization.

255825397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 46.

The square root of 255825397 is about 15994.5427255674. The cubic root of 255825397 is about 634.8160311922.

The spelling of 255825397 in words is "two hundred fifty-five million, eight hundred twenty-five thousand, three hundred ninety-seven".