925421 has 8 divisors (see below), whose sum is σ = 1072704. Its totient is φ = 781920.

The previous prime is 925409. The next prime is 925423. The reversal of 925421 is 124529.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 925421 - 2¹⁰ = 924397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 925421.

It is not an unprimeable number, because it can be changed into a prime (925423) 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 7 ways as a sum of consecutive naturals, for example, 395 + ... + 1416.

It is an arithmetic number, because the mean of its divisors is an integer number (134088).

2⁹²⁵⁴²¹ is an apocalyptic number.

It is an amenable number.

925421 is a deficient number, since it is larger than the sum of its proper divisors (147283).

925421 is a wasteful number, since it uses less digits than its factorization.

925421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891.

The product of its digits is 720, while the sum is 23.

The square root of 925421 is about 961.9880456638. The cubic root of 925421 is about 97.4495377706.

Adding to 925421 its sum of digits (23), we get a square (925444 = 962²).

The spelling of 925421 in words is "nine hundred twenty-five thousand, four hundred twenty-one".