256532619 has 16 divisors (see below), whose sum is σ = 391389440. Its totient is φ = 146409120.

The previous prime is 256532611. The next prime is 256532641. The reversal of 256532619 is 916235652.

It is not a de Polignac number, because 256532619 - 2³ = 256532611 is a prime.

It is a super-2 number, since 2×256532619² = 131617969221998322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256532611) 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 15 ways as a sum of consecutive naturals, for example, 10929 + ... + 25149.

It is an arithmetic number, because the mean of its divisors is an integer number (24461840).

Almost surely, 2^256532619 is an apocalyptic number.

256532619 is a deficient number, since it is larger than the sum of its proper divisors (134856821).

256532619 is a wasteful number, since it uses less digits than its factorization.

256532619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15090.

The product of its digits is 97200, while the sum is 39.

The square root of 256532619 is about 16016.6356954262. The cubic root of 256532619 is about 635.4004698942.

The spelling of 256532619 in words is "two hundred fifty-six million, five hundred thirty-two thousand, six hundred nineteen".