3625381 has 4 divisors (see below), whose sum is σ = 3633772. Its totient is φ = 3616992.

The previous prime is 3625367. The next prime is 3625387. The reversal of 3625381 is 1835263.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2149156 + 1476225 = 1466^2 + 1215^2 .

It is a cyclic number.

It is not a de Polignac number, because 3625381 - 2¹⁵ = 3592613 is a prime.

It is a super-2 number, since 2×3625381² = 26286774790322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3625387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3510 + ... + 4423.

It is an arithmetic number, because the mean of its divisors is an integer number (908443).

Almost surely, 2^3625381 is an apocalyptic number.

It is an amenable number.

3625381 is a deficient number, since it is larger than the sum of its proper divisors (8391).

3625381 is an equidigital number, since it uses as much as digits as its factorization.

3625381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8390.

The product of its digits is 4320, while the sum is 28.

The square root of 3625381 is about 1904.0433293389. The cubic root of 3625381 is about 153.6212229473.

The spelling of 3625381 in words is "three million, six hundred twenty-five thousand, three hundred eighty-one".