421393425 has 12 divisors (see below), whose sum is σ = 696703920. Its totient is φ = 224743120.

The previous prime is 421393417. The next prime is 421393439. The reversal of 421393425 is 524393124.

It is not a de Polignac number, because 421393425 - 2³ = 421393417 is a prime.

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, 2809215 + ... + 2809364.

It is an arithmetic number, because the mean of its divisors is an integer number (58058660).

Almost surely, 2^421393425 is an apocalyptic number.

It is an amenable number.

421393425 is a deficient number, since it is larger than the sum of its proper divisors (275310495).

421393425 is a wasteful number, since it uses less digits than its factorization.

421393425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5618592 (or 5618587 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 421393425 is about 20527.8694705515. The cubic root of 421393425 is about 749.7145135660.

The spelling of 421393425 in words is "four hundred twenty-one million, three hundred ninety-three thousand, four hundred twenty-five".