421334244525 has 48 divisors (see below), whose sum is σ = 739561040064. Its totient is φ = 210926023680.

The previous prime is 421334244509. The next prime is 421334244557. The reversal of 421334244525 is 525442433124.

It is not a de Polignac number, because 421334244525 - 2⁴ = 421334244509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32602 + ... + 918548.

It is an arithmetic number, because the mean of its divisors is an integer number (15407521668).

Almost surely, 2^421334244525 is an apocalyptic number.

It is an amenable number.

421334244525 is a deficient number, since it is larger than the sum of its proper divisors (318226795539).

421334244525 is a wasteful number, since it uses less digits than its factorization.

421334244525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886350 (or 886345 counting only the distinct ones).

The product of its digits is 460800, while the sum is 39.

Adding to 421334244525 its reverse (525442433124), we get a palindrome (946776677649).

The spelling of 421334244525 in words is "four hundred twenty-one billion, three hundred thirty-four million, two hundred forty-four thousand, five hundred twenty-five".