3425521 has 8 divisors (see below), whose sum is σ = 3780000. Its totient is φ = 3078240.

The previous prime is 3425507. The next prime is 3425579. The reversal of 3425521 is 1255243.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3425521 - 2⁵ = 3425489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3425492 and 3425501.

It is not an unprimeable number, because it can be changed into a prime (3425581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771 + ... + 2728.

It is an arithmetic number, because the mean of its divisors is an integer number (472500).

Almost surely, 2^3425521 is an apocalyptic number.

It is an amenable number.

3425521 is a deficient number, since it is larger than the sum of its proper divisors (354479).

3425521 is a wasteful number, since it uses less digits than its factorization.

3425521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3599.

The product of its digits is 1200, while the sum is 22.

The square root of 3425521 is about 1850.8163063902. The cubic root of 3425521 is about 150.7447554021.

It can be divided in two parts, 3 and 425521, that added together give a palindrome (425524).

The spelling of 3425521 in words is "three million, four hundred twenty-five thousand, five hundred twenty-one".