256900151 has 4 divisors (see below), whose sum is σ = 256944600. Its totient is φ = 256855704.

The previous prime is 256900129. The next prime is 256900153. The reversal of 256900151 is 151009652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256900151 - 2¹⁰ = 256899127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256900153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11981 + ... + 25638.

It is an arithmetic number, because the mean of its divisors is an integer number (64236150).

Almost surely, 2^256900151 is an apocalyptic number.

256900151 is a deficient number, since it is larger than the sum of its proper divisors (44449).

256900151 is an equidigital number, since it uses as much as digits as its factorization.

256900151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44448.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 256900151 is about 16028.1050345947. The cubic root of 256900151 is about 635.7037692948.

The spelling of 256900151 in words is "two hundred fifty-six million, nine hundred thousand, one hundred fifty-one".