256325642 has 8 divisors (see below), whose sum is σ = 384909600. Its totient is φ = 128022444.

The previous prime is 256325633. The next prime is 256325651. The reversal of 256325642 is 246523652.

It is an interprime number because it is at equal distance from previous prime (256325633) and next prime (256325651).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 67892 + ... + 71567.

It is an arithmetic number, because the mean of its divisors is an integer number (48113700).

Almost surely, 2^256325642 is an apocalyptic number.

256325642 is a deficient number, since it is larger than the sum of its proper divisors (128583958).

256325642 is a wasteful number, since it uses less digits than its factorization.

256325642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140380.

The product of its digits is 86400, while the sum is 35.

The square root of 256325642 is about 16010.1730783899. The cubic root of 256325642 is about 635.2295381964.

The spelling of 256325642 in words is "two hundred fifty-six million, three hundred twenty-five thousand, six hundred forty-two".