256357695 has 32 divisors (see below), whose sum is σ = 451920384. Its totient is φ = 123056000.

The previous prime is 256357691. The next prime is 256357697. The reversal of 256357695 is 596753652.

It is not a de Polignac number, because 256357695 - 2² = 256357691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256357691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8974 + ... + 24356.

It is an arithmetic number, because the mean of its divisors is an integer number (14122512).

Almost surely, 2^256357695 is an apocalyptic number.

256357695 is a deficient number, since it is larger than the sum of its proper divisors (195562689).

256357695 is a wasteful number, since it uses less digits than its factorization.

256357695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15503.

The product of its digits is 1701000, while the sum is 48.

The square root of 256357695 is about 16011.1740668822. The cubic root of 256357695 is about 635.2560151465.

The spelling of 256357695 in words is "two hundred fifty-six million, three hundred fifty-seven thousand, six hundred ninety-five".