256425603 has 32 divisors (see below), whose sum is σ = 423843840. Its totient is φ = 134538240.

The previous prime is 256425601. The next prime is 256425613. The reversal of 256425603 is 306524652.

It is not a de Polignac number, because 256425603 - 2¹ = 256425601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256425601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5878 + ... + 23396.

It is an arithmetic number, because the mean of its divisors is an integer number (13245120).

Almost surely, 2^256425603 is an apocalyptic number.

256425603 is a deficient number, since it is larger than the sum of its proper divisors (167418237).

256425603 is a wasteful number, since it uses less digits than its factorization.

256425603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17587.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 256425603 is about 16013.2945704499. The cubic root of 256425603 is about 635.3121023478.

The spelling of 256425603 in words is "two hundred fifty-six million, four hundred twenty-five thousand, six hundred three".