421254625 has 16 divisors (see below), whose sum is σ = 573520896. Its totient is φ = 306366000.

The previous prime is 421254619. The next prime is 421254641. The reversal of 421254625 is 526452124.

It is not a de Polignac number, because 421254625 - 2⁷ = 421254497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151809 + ... + 154558.

It is an arithmetic number, because the mean of its divisors is an integer number (35845056).

Almost surely, 2^421254625 is an apocalyptic number.

It is an amenable number.

421254625 is a deficient number, since it is larger than the sum of its proper divisors (152266271).

421254625 is a wasteful number, since it uses less digits than its factorization.

421254625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306393 (or 306383 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 421254625 is about 20524.4884223700. The cubic root of 421254625 is about 749.6321900209.

The spelling of 421254625 in words is "four hundred twenty-one million, two hundred fifty-four thousand, six hundred twenty-five".