421004625 has 16 divisors (see below), whose sum is σ = 700552320. Its totient is φ = 224535600.

The previous prime is 421004579. The next prime is 421004657. The reversal of 421004625 is 526400124.

It is not a de Polignac number, because 421004625 - 2¹¹ = 421002577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421004595 and 421004604.

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, 560965 + ... + 561714.

It is an arithmetic number, because the mean of its divisors is an integer number (43784520).

Almost surely, 2^421004625 is an apocalyptic number.

It is an amenable number.

421004625 is a deficient number, since it is larger than the sum of its proper divisors (279547695).

421004625 is a wasteful number, since it uses less digits than its factorization.

421004625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122697 (or 1122687 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 421004625 is about 20518.3972327275. The cubic root of 421004625 is about 749.4838671128.

Adding to 421004625 its reverse (526400124), we get a palindrome (947404749).

The spelling of 421004625 in words is "four hundred twenty-one million, four thousand, six hundred twenty-five".