3642725 has 6 divisors (see below), whose sum is σ = 4517010. Its totient is φ = 2914160.

The previous prime is 3642721. The next prime is 3642731. The reversal of 3642725 is 5272463.

It can be written as a sum of positive squares in 3 ways, for example, as 21316 + 3621409 = 146^2 + 1903^2 .

It is not a de Polignac number, because 3642725 - 2² = 3642721 is a prime.

It is a d-powerful number, because it can be written as 3⁶ + 6⁸ + 4⁵ + 2⁵ + 7 + 2¹³ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72830 + ... + 72879.

It is an arithmetic number, because the mean of its divisors is an integer number (752835).

Almost surely, 2^3642725 is an apocalyptic number.

It is an amenable number.

3642725 is a deficient number, since it is larger than the sum of its proper divisors (874285).

3642725 is a wasteful number, since it uses less digits than its factorization.

3642725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145719 (or 145714 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 3642725 is about 1908.5924132721. The cubic root of 3642725 is about 153.8658104692.

The spelling of 3642725 in words is "three million, six hundred forty-two thousand, seven hundred twenty-five".