620425 has 24 divisors (see below), whose sum is σ = 874944. Its totient is φ = 432960.

The previous prime is 620413. The next prime is 620429. The reversal of 620425 is 524026.

It is not a de Polignac number, because 620425 - 2⁵ = 620393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620429) 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, 7434 + ... + 7516.

It is an arithmetic number, because the mean of its divisors is an integer number (36456).

2⁶²⁰⁴²⁵ is an apocalyptic number.

620425 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

620425 is a deficient number, since it is larger than the sum of its proper divisors (254519).

620425 is a wasteful number, since it uses less digits than its factorization.

620425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 620425 is about 787.6706164381. The cubic root of 620425 is about 85.2896691625.

The spelling of 620425 in words is "six hundred twenty thousand, four hundred twenty-five".