255806492 has 12 divisors (see below), whose sum is σ = 449405040. Its totient is φ = 127405056.

The previous prime is 255806479. The next prime is 255806501. The reversal of 255806492 is 294608552.

It is a super-2 number, since 2×255806492² = 130873922698692128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123392 + ... + 125447.

It is an arithmetic number, because the mean of its divisors is an integer number (37450420).

Almost surely, 2^255806492 is an apocalyptic number.

It is an amenable number.

255806492 is a deficient number, since it is larger than the sum of its proper divisors (193598548).

255806492 is a wasteful number, since it uses less digits than its factorization.

255806492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249100 (or 249098 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 255806492 is about 15993.9517318266. The cubic root of 255806492 is about 634.8003935830.

The spelling of 255806492 in words is "two hundred fifty-five million, eight hundred six thousand, four hundred ninety-two".