420012525 has 24 divisors (see below), whose sum is σ = 700580160. Its totient is φ = 222019840.

The previous prime is 420012443. The next prime is 420012577. The reversal of 420012525 is 525210024.

It is a happy number.

420012525 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 420012525 - 2¹¹ = 420010477 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, 16305 + ... + 33254.

It is an arithmetic number, because the mean of its divisors is an integer number (29190840).

Almost surely, 2^420012525 is an apocalyptic number.

It is an amenable number.

420012525 is a deficient number, since it is larger than the sum of its proper divisors (280567635).

420012525 is a wasteful number, since it uses less digits than its factorization.

420012525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49685 (or 49680 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 420012525 is about 20494.2071083514. The cubic root of 420012525 is about 748.8946829436.

Adding to 420012525 its reverse (525210024), we get a palindrome (945222549).

The spelling of 420012525 in words is "four hundred twenty million, twelve thousand, five hundred twenty-five".