255225540 has 24 divisors (see below), whose sum is σ = 714631680. Its totient is φ = 68060128.

The previous prime is 255225497. The next prime is 255225559. The reversal of 255225540 is 45522552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 255225498 and 255225507.

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, 2126820 + ... + 2126939.

It is an arithmetic number, because the mean of its divisors is an integer number (29776320).

Almost surely, 2^255225540 is an apocalyptic number.

255225540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255225540 is an abundant number, since it is smaller than the sum of its proper divisors (459406140).

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

255225540 is a wasteful number, since it uses less digits than its factorization.

255225540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253771 (or 4253769 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 255225540 is about 15975.7797931744. The cubic root of 255225540 is about 634.3194726487.

The spelling of 255225540 in words is "two hundred fifty-five million, two hundred twenty-five thousand, five hundred forty".