4257825 has 48 divisors (see below), whose sum is σ = 8291136. Its totient is φ = 1900800.

The previous prime is 4257821. The next prime is 4257833. The reversal of 4257825 is 5287524.

It is not a de Polignac number, because 4257825 - 2² = 4257821 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4257821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10527 + ... + 10923.

It is an arithmetic number, because the mean of its divisors is an integer number (172732).

Almost surely, 2^4257825 is an apocalyptic number.

It is an amenable number.

4257825 is a deficient number, since it is larger than the sum of its proper divisors (4033311).

4257825 is a wasteful number, since it uses less digits than its factorization.

4257825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 429 counting only the distinct ones).

The product of its digits is 22400, while the sum is 33.

The square root of 4257825 is about 2063.4497813128. The cubic root of 4257825 is about 162.0799407318.

The spelling of 4257825 in words is "four million, two hundred fifty-seven thousand, eight hundred twenty-five".