256245530 has 16 divisors (see below), whose sum is σ = 481296384. Its totient is φ = 98041680.

The previous prime is 256245511. The next prime is 256245541. The reversal of 256245530 is 35542652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556826 + ... + 557285.

It is an arithmetic number, because the mean of its divisors is an integer number (30081024).

Almost surely, 2^256245530 is an apocalyptic number.

256245530 is a deficient number, since it is larger than the sum of its proper divisors (225050854).

256245530 is a wasteful number, since it uses less digits than its factorization.

256245530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114141.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 256245530 is about 16007.6709736301. The cubic root of 256245530 is about 635.1633531008.

The spelling of 256245530 in words is "two hundred fifty-six million, two hundred forty-five thousand, five hundred thirty".