525423244235421 has 32 divisors (see below), whose sum is σ = 855363019125760. Its totient is φ = 280194283074816.

The previous prime is 525423244235413. The next prime is 525423244235467. The reversal of 525423244235421 is 124532442324525.

It is not a de Polignac number, because 525423244235421 - 2³ = 525423244235413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525423244233421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9827213836 + ... + 9827267301.

It is an arithmetic number, because the mean of its divisors is an integer number (26730094347680).

Almost surely, 2^{525423244235421} is an apocalyptic number.

It is an amenable number.

525423244235421 is a deficient number, since it is larger than the sum of its proper divisors (329939774890339).

525423244235421 is a wasteful number, since it uses less digits than its factorization.

525423244235421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19654481233.

The product of its digits is 9216000, while the sum is 48.

Adding to 525423244235421 its reverse (124532442324525), we get a palindrome (649955686559946).

The spelling of 525423244235421 in words is "five hundred twenty-five trillion, four hundred twenty-three billion, two hundred forty-four million, two hundred thirty-five thousand, four hundred twenty-one".