3517425 has 42 divisors (see below), whose sum is σ = 6573302. Its totient is φ = 1866240.

The previous prime is 3517421. The next prime is 3517427. The reversal of 3517425 is 5247153.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 46656 + 3470769 = 216^2 + 1863^2 .

It is not a de Polignac number, because 3517425 - 2² = 3517421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (3517421) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 18129 + ... + 18321.

Almost surely, 2^3517425 is an apocalyptic number.

It is an amenable number.

3517425 is a deficient number, since it is larger than the sum of its proper divisors (3055877).

3517425 is an equidigital number, since it uses as much as digits as its factorization.

3517425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 201 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 3517425 is about 1875.4799385757. The cubic root of 3517425 is about 152.0809961902.

It can be divided in two parts, 351 and 7425, that added together give a 5-th power (7776 = 6⁵).

The spelling of 3517425 in words is "three million, five hundred seventeen thousand, four hundred twenty-five".