525423181 has 2 divisors, whose sum is σ = 525423182. Its totient is φ = 525423180.

The previous prime is 525423163. The next prime is 525423193. The reversal of 525423181 is 181324525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305375625 + 220047556 = 17475^2 + 14834^2 .

It is a cyclic number.

It is not a de Polignac number, because 525423181 - 2²⁵ = 491868749 is a prime.

It is a super-2 number, since 2×525423181² = 552139038264317522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525423881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262711590 + 262711591.

It is an arithmetic number, because the mean of its divisors is an integer number (262711591).

Almost surely, 2^525423181 is an apocalyptic number.

It is an amenable number.

525423181 is a deficient number, since it is larger than the sum of its proper divisors (1).

525423181 is an equidigital number, since it uses as much as digits as its factorization.

525423181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 31.

The square root of 525423181 is about 22922.1111811281. Note that the first 4 decimals coincide. The cubic root of 525423181 is about 806.9310179260.

The spelling of 525423181 in words is "five hundred twenty-five million, four hundred twenty-three thousand, one hundred eighty-one".