255725397 has 8 divisors (see below), whose sum is σ = 378852480. Its totient is φ = 170483580.

The previous prime is 255725383. The next prime is 255725453. The reversal of 255725397 is 793527552.

255725397 is a `hidden beast` number, since 2 + 557 + 2 + 5 + 3 + 97 = 666.

It is not a de Polignac number, because 255725397 - 2⁴ = 255725381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255725317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4735629 + ... + 4735682.

It is an arithmetic number, because the mean of its divisors is an integer number (47356560).

Almost surely, 2^255725397 is an apocalyptic number.

255725397 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

255725397 is a deficient number, since it is larger than the sum of its proper divisors (123127083).

255725397 is an equidigital number, since it uses as much as digits as its factorization.

255725397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9471320 (or 9471314 counting only the distinct ones).

The product of its digits is 661500, while the sum is 45.

The square root of 255725397 is about 15991.4163537818. The cubic root of 255725397 is about 634.7333056599.

The spelling of 255725397 in words is "two hundred fifty-five million, seven hundred twenty-five thousand, three hundred ninety-seven".