390425 has 24 divisors (see below), whose sum is σ = 583296. Its totient is φ = 253440.

The previous prime is 390421. The next prime is 390433. The reversal of 390425 is 524093.

390425 = T₇₀ + T₇₁ + ... + T₁₃₈.

It is not a de Polignac number, because 390425 - 2² = 390421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a nialpdrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 390425.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390421) 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 23 ways as a sum of consecutive naturals, for example, 3977 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (24304).

2³⁹⁰⁴²⁵ is an apocalyptic number.

390425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

390425 is a deficient number, since it is larger than the sum of its proper divisors (192871).

390425 is a wasteful number, since it uses less digits than its factorization.

390425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 390425 is about 624.8399795148. The cubic root of 390425 is about 73.0879655165.

The spelling of 390425 in words is "three hundred ninety thousand, four hundred twenty-five".