925409 has 2 divisors, whose sum is σ = 925410. Its totient is φ = 925408.

The previous prime is 925399. The next prime is 925423. The reversal of 925409 is 904529.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 253009 = 820^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 925409 - 2⁸ = 925153 is a prime.

It is a Chen prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 925409.

It is not a weakly prime, because it can be changed into another prime (925469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 462704 + 462705.

It is an arithmetic number, because the mean of its divisors is an integer number (462705).

2⁹²⁵⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

925409 is a deficient number, since it is larger than the sum of its proper divisors (1).

925409 is an equidigital number, since it uses as much as digits as its factorization.

925409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 925409 is about 961.9818085598. The cubic root of 925409 is about 97.4491165571.

The spelling of 925409 in words is "nine hundred twenty-five thousand, four hundred nine".