3261625 has 16 divisors (see below), whose sum is σ = 4127760. Its totient is φ = 2572800.

The previous prime is 3261619. The next prime is 3261631. The reversal of 3261625 is 5261623.

3261625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3261619) and next prime (3261631).

It can be written as a sum of positive squares in 8 ways, for example, as 1982464 + 1279161 = 1408^2 + 1131^2 .

It is not a de Polignac number, because 3261625 - 2³ = 3261617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a d-powerful number, because it can be written as 3⁷ + 2¹⁹ + 6⁷ + 1 + 6⁷ + 2²¹ + 5⁷ .

It is a self number, because there is not a number n which added to its sum of digits gives 3261625.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11991 + ... + 12259.

It is an arithmetic number, because the mean of its divisors is an integer number (257985).

Almost surely, 2^3261625 is an apocalyptic number.

It is an amenable number.

3261625 is a deficient number, since it is larger than the sum of its proper divisors (866135).

3261625 is an equidigital number, since it uses as much as digits as its factorization.

3261625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 371 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 3261625 is about 1805.9969545932. The cubic root of 3261625 is about 148.3012036065.

The spelling of 3261625 in words is "three million, two hundred sixty-one thousand, six hundred twenty-five".