421925 has 12 divisors (see below), whose sum is σ = 598176. Its totient is φ = 289200.

The previous prime is 421913. The next prime is 421943. The reversal of 421925 is 529124.

It is not a de Polignac number, because 421925 - 2¹⁴ = 405541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1031 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (49848).

2⁴²¹⁹²⁵ is an apocalyptic number.

It is an amenable number.

421925 is a deficient number, since it is larger than the sum of its proper divisors (176251).

421925 is a wasteful number, since it uses less digits than its factorization.

421925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428 (or 2423 counting only the distinct ones).

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

The square root of 421925 is about 649.5575417159. The cubic root of 421925 is about 75.0029628459.

The spelling of 421925 in words is "four hundred twenty-one thousand, nine hundred twenty-five".