420877525 has 6 divisors (see below), whose sum is σ = 521888162. Its totient is φ = 336702000.

The previous prime is 420877519. The next prime is 420877537. The reversal of 420877525 is 525778024.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 138839089 + 282038436 = 11783^2 + 16794^2 .

It is a de Polignac number, because none of the positive numbers 2^k-420877525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8417526 + ... + 8417575.

Almost surely, 2^420877525 is an apocalyptic number.

It is an amenable number.

420877525 is a deficient number, since it is larger than the sum of its proper divisors (101010637).

420877525 is a wasteful number, since it uses less digits than its factorization.

420877525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16835111 (or 16835106 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 420877525 is about 20515.2997784580. The cubic root of 420877525 is about 749.4084372310.

The spelling of 420877525 in words is "four hundred twenty million, eight hundred seventy-seven thousand, five hundred twenty-five".