256454425 has 6 divisors (see below), whose sum is σ = 318003518. Its totient is φ = 205163520.

The previous prime is 256454417. The next prime is 256454441. The reversal of 256454425 is 524454652.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 55041561 + 201412864 = 7419^2 + 14192^2 .

It is not a de Polignac number, because 256454425 - 2³ = 256454417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5129064 + ... + 5129113.

Almost surely, 2^256454425 is an apocalyptic number.

256454425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256454425 is a deficient number, since it is larger than the sum of its proper divisors (61549093).

256454425 is a wasteful number, since it uses less digits than its factorization.

256454425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10258187 (or 10258182 counting only the distinct ones).

The product of its digits is 192000, while the sum is 37.

The square root of 256454425 is about 16014.1944848937. The cubic root of 256454425 is about 635.3359042865.

The spelling of 256454425 in words is "two hundred fifty-six million, four hundred fifty-four thousand, four hundred twenty-five".