3916625 has 8 divisors (see below), whose sum is σ = 4888104. Its totient is φ = 3133200.

The previous prime is 3916621. The next prime is 3916631. The reversal of 3916625 is 5266193.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 110224 + 3806401 = 332^2 + 1951^2 .

It is not a de Polignac number, because 3916625 - 2² = 3916621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 3916591 and 3916600.

It is not an unprimeable number, because it can be changed into a prime (3916621) 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, 15542 + ... + 15791.

It is an arithmetic number, because the mean of its divisors is an integer number (611013).

Almost surely, 2^3916625 is an apocalyptic number.

It is an amenable number.

3916625 is a deficient number, since it is larger than the sum of its proper divisors (971479).

3916625 is an equidigital number, since it uses as much as digits as its factorization.

3916625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31348 (or 31338 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 3916625 is about 1979.0464875793. The cubic root of 3916625 is about 157.6294392384.

The spelling of 3916625 in words is "three million, nine hundred sixteen thousand, six hundred twenty-five".