256532575 has 12 divisors (see below), whose sum is σ = 342570088. Its totient is φ = 189439200.

The previous prime is 256532569. The next prime is 256532603. The reversal of 256532575 is 575235652.

It is not a de Polignac number, because 256532575 - 2⁵ = 256532543 is a prime.

It is a super-2 number, since 2×256532575² = 131617924072261250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394341 + ... + 394990.

Almost surely, 2^256532575 is an apocalyptic number.

256532575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256532575 is a deficient number, since it is larger than the sum of its proper divisors (86037513).

256532575 is a wasteful number, since it uses less digits than its factorization.

256532575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789354 (or 789349 counting only the distinct ones).

The product of its digits is 315000, while the sum is 40.

The square root of 256532575 is about 16016.6343218543. The cubic root of 256532575 is about 635.4004335666.

The spelling of 256532575 in words is "two hundred fifty-six million, five hundred thirty-two thousand, five hundred seventy-five".