525354421 has 2 divisors, whose sum is σ = 525354422. Its totient is φ = 525354420.

The previous prime is 525354419. The next prime is 525354433. The reversal of 525354421 is 124453525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283551921 + 241802500 = 16839^2 + 15550^2 .

It is a cyclic number.

It is not a de Polignac number, because 525354421 - 2¹ = 525354419 is a prime.

Together with 525354419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525354121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262677210 + 262677211.

It is an arithmetic number, because the mean of its divisors is an integer number (262677211).

Almost surely, 2^525354421 is an apocalyptic number.

It is an amenable number.

525354421 is a deficient number, since it is larger than the sum of its proper divisors (1).

525354421 is an equidigital number, since it uses as much as digits as its factorization.

525354421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 31.

The square root of 525354421 is about 22920.6112702083. The cubic root of 525354421 is about 806.8958164609.

The spelling of 525354421 in words is "five hundred twenty-five million, three hundred fifty-four thousand, four hundred twenty-one".