1969925 has 6 divisors (see below), whose sum is σ = 2442738. Its totient is φ = 1575920.

The previous prime is 1969921. The next prime is 1969949. The reversal of 1969925 is 5299691.

It can be written as a sum of positive squares in 3 ways, for example, as 334084 + 1635841 = 578^2 + 1279^2 .

It is not a de Polignac number, because 1969925 - 2² = 1969921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1969921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39374 + ... + 39423.

It is an arithmetic number, because the mean of its divisors is an integer number (407123).

2^1969925 is an apocalyptic number.

It is an amenable number.

1969925 is a deficient number, since it is larger than the sum of its proper divisors (472813).

1969925 is an equidigital number, since it uses as much as digits as its factorization.

1969925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78807 (or 78802 counting only the distinct ones).

The product of its digits is 43740, while the sum is 41.

The square root of 1969925 is about 1403.5401668638. The cubic root of 1969925 is about 125.3573772781.

The spelling of 1969925 in words is "one million, nine hundred sixty-nine thousand, nine hundred twenty-five".