525720313 has 2 divisors, whose sum is σ = 525720314. Its totient is φ = 525720312.

The previous prime is 525720287. The next prime is 525720317. The reversal of 525720313 is 313027525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423042624 + 102677689 = 20568^2 + 10133^2 .

It is a cyclic number.

It is not a de Polignac number, because 525720313 - 2²⁵ = 492165881 is a prime.

It is not a weakly prime, because it can be changed into another prime (525720317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262860156 + 262860157.

It is an arithmetic number, because the mean of its divisors is an integer number (262860157).

Almost surely, 2^525720313 is an apocalyptic number.

It is an amenable number.

525720313 is a deficient number, since it is larger than the sum of its proper divisors (1).

525720313 is an equidigital number, since it uses as much as digits as its factorization.

525720313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 525720313 is about 22928.5916052426. The cubic root of 525720313 is about 807.0830984163.

Adding to 525720313 its reverse (313027525), we get a palindrome (838747838).

The spelling of 525720313 in words is "five hundred twenty-five million, seven hundred twenty thousand, three hundred thirteen".