421054525 has 12 divisors (see below), whose sum is σ = 531960372. Its totient is φ = 330487040.

The previous prime is 421054519. The next prime is 421054531. The reversal of 421054525 is 525450124.

It is an interprime number because it is at equal distance from previous prime (421054519) and next prime (421054531).

It can be written as a sum of positive squares in 6 ways, for example, as 12489156 + 408565369 = 3534^2 + 20213^2 .

It is not a de Polignac number, because 421054525 - 2¹⁹ = 420530237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421054493 and 421054502.

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 11 ways as a sum of consecutive naturals, for example, 157564 + ... + 160213.

It is an arithmetic number, because the mean of its divisors is an integer number (44330031).

Almost surely, 2^421054525 is an apocalyptic number.

It is an amenable number.

421054525 is a deficient number, since it is larger than the sum of its proper divisors (110905847).

421054525 is a wasteful number, since it uses less digits than its factorization.

421054525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317840 (or 317835 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 421054525 is about 20519.6131786152. The cubic root of 421054525 is about 749.5134770547.

The spelling of 421054525 in words is "four hundred twenty-one million, fifty-four thousand, five hundred twenty-five".