4251625 has 32 divisors (see below), whose sum is σ = 6259968. Its totient is φ = 2822400.

The previous prime is 4251623. The next prime is 4251629. The reversal of 4251625 is 5261524.

It is not a de Polignac number, because 4251625 - 2¹ = 4251623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4251625.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37569 + ... + 37681.

It is an arithmetic number, because the mean of its divisors is an integer number (195624).

Almost surely, 2^4251625 is an apocalyptic number.

It is an amenable number.

4251625 is a deficient number, since it is larger than the sum of its proper divisors (2008343).

4251625 is a wasteful number, since it uses less digits than its factorization.

4251625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 168 counting only the distinct ones).

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

The square root of 4251625 is about 2061.9468955334. The cubic root of 4251625 is about 162.0012320183.

The spelling of 4251625 in words is "four million, two hundred fifty-one thousand, six hundred twenty-five".