3620425 has 6 divisors (see below), whose sum is σ = 4489358. Its totient is φ = 2896320.

The previous prime is 3620401. The next prime is 3620437. The reversal of 3620425 is 5240263.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 419904 + 3200521 = 648^2 + 1789^2 .

It is not a de Polignac number, because 3620425 - 2¹³ = 3612233 is a prime.

It is a Duffinian number.

3620425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3620396 and 3620405.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 72384 + ... + 72433.

Almost surely, 2^3620425 is an apocalyptic number.

It is an amenable number.

3620425 is a deficient number, since it is larger than the sum of its proper divisors (868933).

3620425 is a wasteful number, since it uses less digits than its factorization.

3620425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144827 (or 144822 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 3620425 is about 1902.7414432865. The cubic root of 3620425 is about 153.5511894830.

Adding to 3620425 its reverse (5240263), we get a palindrome (8860688).

The spelling of 3620425 in words is "three million, six hundred twenty thousand, four hundred twenty-five".