420049725 has 24 divisors (see below), whose sum is σ = 697023840. Its totient is φ = 223206720.

The previous prime is 420049711. The next prime is 420049801. The reversal of 420049725 is 527940024.

It is a de Polignac number, because none of the positive numbers 2^k-420049725 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10666 + ... + 30884.

It is an arithmetic number, because the mean of its divisors is an integer number (29042660).

Almost surely, 2^420049725 is an apocalyptic number.

It is an amenable number.

420049725 is a deficient number, since it is larger than the sum of its proper divisors (276974115).

420049725 is a wasteful number, since it uses less digits than its factorization.

420049725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20509 (or 20504 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 420049725 is about 20495.1146617920. The cubic root of 420049725 is about 748.9167918555.

Adding to 420049725 its reverse (527940024), we get a palindrome (947989749).

The spelling of 420049725 in words is "four hundred twenty million, forty-nine thousand, seven hundred twenty-five".