255530025556 has 24 divisors (see below), whose sum is σ = 481661114144. Its totient is φ = 117916045920.

The previous prime is 255530025533. The next prime is 255530025577. The reversal of 255530025556 is 655520035552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136830 + ... + 727861.

Almost surely, 2^255530025556 is an apocalyptic number.

255530025556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

255530025556 is a deficient number, since it is larger than the sum of its proper divisors (226131088588).

255530025556 is a wasteful number, since it uses less digits than its factorization.

255530025556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870391 (or 870389 counting only the distinct ones).

The product of its (nonzero) digits is 1125000, while the sum is 43.

The spelling of 255530025556 in words is "two hundred fifty-five billion, five hundred thirty million, twenty-five thousand, five hundred fifty-six".