1925009 has 4 divisors (see below), whose sum is σ = 1936704. Its totient is φ = 1913316.

The previous prime is 1924973. The next prime is 1925017. The reversal of 1925009 is 9005291.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9005291 = 17 ⋅529723.

It is a cyclic number.

It is not a de Polignac number, because 1925009 - 2⁸ = 1924753 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1925039) 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 3 ways as a sum of consecutive naturals, for example, 5597 + ... + 5930.

It is an arithmetic number, because the mean of its divisors is an integer number (484176).

2^1925009 is an apocalyptic number.

It is an amenable number.

1925009 is a deficient number, since it is larger than the sum of its proper divisors (11695).

1925009 is a wasteful number, since it uses less digits than its factorization.

1925009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11694.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 1925009 is about 1387.4469359222. The cubic root of 1925009 is about 124.3972906018.

The spelling of 1925009 in words is "one million, nine hundred twenty-five thousand, nine".