420881925 has 12 divisors (see below), whose sum is σ = 695858240. Its totient is φ = 224470320.

The previous prime is 420881921. The next prime is 420881927. The reversal of 420881925 is 529188024.

It is not a de Polignac number, because 420881925 - 2² = 420881921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420881921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2805805 + ... + 2805954.

Almost surely, 2^420881925 is an apocalyptic number.

It is an amenable number.

420881925 is a deficient number, since it is larger than the sum of its proper divisors (274976315).

420881925 is a wasteful number, since it uses less digits than its factorization.

420881925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611772 (or 5611767 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 420881925 is about 20515.4070152166. The cubic root of 420881925 is about 749.4110487474.

The spelling of 420881925 in words is "four hundred twenty million, eight hundred eighty-one thousand, nine hundred twenty-five".