525215473 has 2 divisors, whose sum is σ = 525215474. Its totient is φ = 525215472.

The previous prime is 525215447. The next prime is 525215489. The reversal of 525215473 is 374512525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272151009 + 253064464 = 16497^2 + 15908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525215473 is a prime.

It is a super-2 number, since 2×525215473² = 551702586157227458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (525215443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262607736 + 262607737.

It is an arithmetic number, because the mean of its divisors is an integer number (262607737).

Almost surely, 2^525215473 is an apocalyptic number.

It is an amenable number.

525215473 is a deficient number, since it is larger than the sum of its proper divisors (1).

525215473 is an equidigital number, since it uses as much as digits as its factorization.

525215473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42000, while the sum is 34.

The square root of 525215473 is about 22917.5799987695. The cubic root of 525215473 is about 806.8246730948.

Adding to 525215473 its reverse (374512525), we get a palindrome (899727998).

The spelling of 525215473 in words is "five hundred twenty-five million, two hundred fifteen thousand, four hundred seventy-three".