1965725 has 12 divisors (see below), whose sum is σ = 2479380. Its totient is φ = 1545600.

The previous prime is 1965709. The next prime is 1965731. The reversal of 1965725 is 5275691.

It can be written as a sum of positive squares in 6 ways, for example, as 145924 + 1819801 = 382^2 + 1349^2 .

It is not a de Polignac number, because 1965725 - 2⁴ = 1965709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 881 + ... + 2169.

It is an arithmetic number, because the mean of its divisors is an integer number (206615).

2^1965725 is an apocalyptic number.

It is an amenable number.

1965725 is a deficient number, since it is larger than the sum of its proper divisors (513655).

1965725 is a wasteful number, since it uses less digits than its factorization.

1965725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1355 counting only the distinct ones).

The product of its digits is 18900, while the sum is 35.

The square root of 1965725 is about 1402.0431519750. The cubic root of 1965725 is about 125.2682240353.

The spelling of 1965725 in words is "one million, nine hundred sixty-five thousand, seven hundred twenty-five".