255398895 has 24 divisors (see below), whose sum is σ = 448761456. Its totient is φ = 134345088.

The previous prime is 255398879. The next prime is 255398917. The reversal of 255398895 is 598893552.

255398895 is a `hidden beast` number, since 2 + 553 + 9 + 8 + 89 + 5 = 666.

It is not a de Polignac number, because 255398895 - 2⁴ = 255398879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35589 + ... + 42158.

It is an arithmetic number, because the mean of its divisors is an integer number (18698394).

Almost surely, 2^255398895 is an apocalyptic number.

255398895 is a deficient number, since it is larger than the sum of its proper divisors (193362561).

255398895 is a wasteful number, since it uses less digits than its factorization.

255398895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77831 (or 77828 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 54.

The square root of 255398895 is about 15981.2044289534. The cubic root of 255398895 is about 634.4630548901.

The spelling of 255398895 in words is "two hundred fifty-five million, three hundred ninety-eight thousand, eight hundred ninety-five".