255772220 has 36 divisors (see below), whose sum is σ = 590395512. Its totient is φ = 93007200.

The previous prime is 255772201. The next prime is 255772241. The reversal of 255772220 is 22277552.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 50426 + ... + 55265.

Almost surely, 2^255772220 is an apocalyptic number.

255772220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255772220 is an abundant number, since it is smaller than the sum of its proper divisors (334623292).

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

255772220 is a wasteful number, since it uses less digits than its factorization.

255772220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105722 (or 105709 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 255772220 is about 15992.8802909295. The cubic root of 255772220 is about 634.7720429203.

The spelling of 255772220 in words is "two hundred fifty-five million, seven hundred seventy-two thousand, two hundred twenty".