3625139 has 4 divisors (see below), whose sum is σ = 4143024. Its totient is φ = 3107256.

The previous prime is 3625133. The next prime is 3625151. The reversal of 3625139 is 9315263.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9315263 = 19 ⋅490277.

It is a cyclic number.

It is not a de Polignac number, because 3625139 - 2⁴ = 3625123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3625133) 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, 258932 + ... + 258945.

It is an arithmetic number, because the mean of its divisors is an integer number (1035756).

Almost surely, 2^3625139 is an apocalyptic number.

3625139 is a deficient number, since it is larger than the sum of its proper divisors (517885).

3625139 is an equidigital number, since it uses as much as digits as its factorization.

3625139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517884.

The product of its digits is 4860, while the sum is 29.

The square root of 3625139 is about 1903.9797793044. The cubic root of 3625139 is about 153.6178047168.

The spelling of 3625139 in words is "three million, six hundred twenty-five thousand, one hundred thirty-nine".