256451002 has 16 divisors (see below), whose sum is σ = 398645640. Its totient is φ = 123584832.

The previous prime is 256450991. The next prime is 256451017. The reversal of 256451002 is 200154652.

256451002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 182817441 + 73633561 = 13521^2 + 8581^2 .

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, 31948 + ... + 39160.

Almost surely, 2^256451002 is an apocalyptic number.

256451002 is a deficient number, since it is larger than the sum of its proper divisors (142194638).

256451002 is a wasteful number, since it uses less digits than its factorization.

256451002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 256451002 is about 16014.0876106009. The cubic root of 256451002 is about 635.3330775796. Note that the first 3 decimals are identical.

The spelling of 256451002 in words is "two hundred fifty-six million, four hundred fifty-one thousand, two".