425257 has 8 divisors (see below), whose sum is σ = 492800. Its totient is φ = 359424.

The previous prime is 425251. The next prime is 425273. The reversal of 425257 is 752524.

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

It is a 4-Lehmer number, since φ(425257) divides (425257-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 425257 - 2¹¹ = 423209 is a prime.

It is a d-powerful number, because it can be written as 4⁷ + 2¹⁷ + 2¹⁸ + 5² + 5⁶ + 7 .

425257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (425251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169 + ... + 937.

It is an arithmetic number, because the mean of its divisors is an integer number (61600).

2⁴²⁵²⁵⁷ is an apocalyptic number.

425257 is the 377-th hex number.

It is an amenable number.

425257 is a deficient number, since it is larger than the sum of its proper divisors (67543).

425257 is an equidigital number, since it uses as much as digits as its factorization.

425257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855.

The product of its digits is 2800, while the sum is 25.

The square root of 425257 is about 652.1173207330. The cubic root of 425257 is about 75.1998816393.

The spelling of 425257 in words is "four hundred twenty-five thousand, two hundred fifty-seven".