255732642 has 24 divisors (see below), whose sum is σ = 604459440. Its totient is φ = 77494680.

The previous prime is 255732619. The next prime is 255732691. The reversal of 255732642 is 246237552.

255732642 is a `hidden beast` number, since 2 + 5 + 5 + 7 + 3 + 2 + 642 = 666.

255732642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 255732597 and 255732606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 645592 + ... + 645987.

It is an arithmetic number, because the mean of its divisors is an integer number (25185810).

Almost surely, 2^255732642 is an apocalyptic number.

255732642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

255732642 is an abundant number, since it is smaller than the sum of its proper divisors (348726798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255732642 is a wasteful number, since it uses less digits than its factorization.

255732642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291598 (or 1291595 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 255732642 is about 15991.6428799545. The cubic root of 255732642 is about 634.7392998493.

The spelling of 255732642 in words is "two hundred fifty-five million, seven hundred thirty-two thousand, six hundred forty-two".