256654755 has 144 divisors (see below), whose sum is σ = 560124864. Its totient is φ = 106375680.

The previous prime is 256654751. The next prime is 256654757. The reversal of 256654755 is 557456652.

256654755 is a `hidden beast` number, since 2 + 56 + 6 + 547 + 55 = 666.

It is not a de Polignac number, because 256654755 - 2² = 256654751 is a prime.

It is a super-2 number, since 2×256654755² = 131743326528220050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 256654755.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256654751) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4207425 + ... + 4207485.

It is an arithmetic number, because the mean of its divisors is an integer number (3889756).

Almost surely, 2^256654755 is an apocalyptic number.

256654755 is an abundant number, since it is smaller than the sum of its proper divisors (303470109).

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

256654755 is a wasteful number, since it uses less digits than its factorization.

256654755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 132 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The square root of 256654755 is about 16020.4480274429. The cubic root of 256654755 is about 635.5012926269.

The spelling of 256654755 in words is "two hundred fifty-six million, six hundred fifty-four thousand, seven hundred fifty-five".