524025421 has 2 divisors, whose sum is σ = 524025422. Its totient is φ = 524025420.

The previous prime is 524025371. The next prime is 524025431. The reversal of 524025421 is 124520425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289476196 + 234549225 = 17014^2 + 15315^2 .

It is a cyclic number.

It is not a de Polignac number, because 524025421 - 2¹¹ = 524023373 is a prime.

It is equal to p_27553102 and since 524025421 and 27553102 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (524025431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262012710 + 262012711.

It is an arithmetic number, because the mean of its divisors is an integer number (262012711).

Almost surely, 2^524025421 is an apocalyptic number.

It is an amenable number.

524025421 is a deficient number, since it is larger than the sum of its proper divisors (1).

524025421 is an equidigital number, since it uses as much as digits as its factorization.

524025421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 524025421 is about 22891.6015385556. The cubic root of 524025421 is about 806.2148348663.

Adding to 524025421 its reverse (124520425), we get a palindrome (648545846).

The spelling of 524025421 in words is "five hundred twenty-four million, twenty-five thousand, four hundred twenty-one".