256152801 has 8 divisors (see below), whose sum is σ = 342615744. Its totient is φ = 170229200.

The previous prime is 256152797. The next prime is 256152893. The reversal of 256152801 is 108251652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256152801 - 2² = 256152797 is a prime.

It is a super-2 number, since 2×256152801² = 131228514920291202, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256156801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133725 + ... + 135626.

It is an arithmetic number, because the mean of its divisors is an integer number (42826968).

Almost surely, 2^256152801 is an apocalyptic number.

It is an amenable number.

256152801 is a deficient number, since it is larger than the sum of its proper divisors (86462943).

256152801 is a wasteful number, since it uses less digits than its factorization.

256152801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269671.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 256152801 is about 16004.7743189337. The cubic root of 256152801 is about 635.0867271546.

The spelling of 256152801 in words is "two hundred fifty-six million, one hundred fifty-two thousand, eight hundred one".