1025937909 has 6 divisors (see below), whose sum is σ = 1481910326. Its totient is φ = 683958600.

The previous prime is 1025937893. The next prime is 1025937937. The reversal of 1025937909 is 9097395201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 565964100 + 459973809 = 23790^2 + 21447^2 .

It is not a de Polignac number, because 1025937909 - 2⁴ = 1025937893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025938909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56996542 + ... + 56996559.

Almost surely, 2^1025937909 is an apocalyptic number.

It is an amenable number.

1025937909 is a deficient number, since it is larger than the sum of its proper divisors (455972417).

1025937909 is a wasteful number, since it uses less digits than its factorization.

1025937909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113993107 (or 113993104 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 1025937909 is about 32030.2655156026. The cubic root of 1025937909 is about 1008.5722757798.

The spelling of 1025937909 in words is "one billion, twenty-five million, nine hundred thirty-seven thousand, nine hundred nine".