256342575 has 48 divisors (see below), whose sum is σ = 453185280. Its totient is φ = 127403520.

The previous prime is 256342573. The next prime is 256342591. The reversal of 256342575 is 575243652.

It is a happy number.

It is not a de Polignac number, because 256342575 - 2¹ = 256342573 is a prime.

Its product of digits (252000) is a multiple of the sum of its prime factors (2016).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256342573) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135486 + ... + 137364.

It is an arithmetic number, because the mean of its divisors is an integer number (9441360).

Almost surely, 2^256342575 is an apocalyptic number.

256342575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256342575 is a deficient number, since it is larger than the sum of its proper divisors (196842705).

256342575 is a wasteful number, since it uses less digits than its factorization.

256342575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016 (or 2011 counting only the distinct ones).

The product of its digits is 252000, while the sum is 39.

The square root of 256342575 is about 16010.7018896737. The cubic root of 256342575 is about 635.2435257486.

The spelling of 256342575 in words is "two hundred fifty-six million, three hundred forty-two thousand, five hundred seventy-five".