255001656 has 128 divisors (see below), whose sum is σ = 799787520. Its totient is φ = 65954304.

The previous prime is 255001639. The next prime is 255001657. The reversal of 255001656 is 656100552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255001657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114651 + ... + 116853.

It is an arithmetic number, because the mean of its divisors is an integer number (6248340).

Almost surely, 2^255001656 is an apocalyptic number.

255001656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255001656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399893760).

255001656 is an abundant number, since it is smaller than the sum of its proper divisors (544785864).

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

255001656 is a wasteful number, since it uses less digits than its factorization.

255001656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285 (or 2281 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 255001656 is about 15968.7712739584. The cubic root of 255001656 is about 634.1339432460.

The spelling of 255001656 in words is "two hundred fifty-five million, one thousand, six hundred fifty-six".