4390825 has 6 divisors (see below), whose sum is σ = 5444654. Its totient is φ = 3512640.

The previous prime is 4390823. The next prime is 4390829. The reversal of 4390825 is 5280934.

It can be written as a sum of positive squares in 3 ways, for example, as 118336 + 4272489 = 344^2 + 2067^2 .

It is not a de Polignac number, because 4390825 - 2¹ = 4390823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4390823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 87792 + ... + 87841.

Almost surely, 2^4390825 is an apocalyptic number.

It is an amenable number.

4390825 is a deficient number, since it is larger than the sum of its proper divisors (1053829).

4390825 is a wasteful number, since it uses less digits than its factorization.

4390825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175643 (or 175638 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 4390825 is about 2095.4295502355. The cubic root of 4390825 is about 163.7502767899.

The spelling of 4390825 in words is "four million, three hundred ninety thousand, eight hundred twenty-five".