525388249 has 2 divisors, whose sum is σ = 525388250. Its totient is φ = 525388248.

The previous prime is 525388187. The next prime is 525388261. The reversal of 525388249 is 942883525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406425600 + 118962649 = 20160^2 + 10907^2 .

It is a cyclic number.

It is not a de Polignac number, because 525388249 - 2⁷ = 525388121 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 525388199 and 525388208.

It is not a weakly prime, because it can be changed into another prime (525388649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262694124 + 262694125.

It is an arithmetic number, because the mean of its divisors is an integer number (262694125).

Almost surely, 2^525388249 is an apocalyptic number.

It is an amenable number.

525388249 is a deficient number, since it is larger than the sum of its proper divisors (1).

525388249 is an equidigital number, since it uses as much as digits as its factorization.

525388249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 46.

The square root of 525388249 is about 22921.3491967641. The cubic root of 525388249 is about 806.9131349826.

The spelling of 525388249 in words is "five hundred twenty-five million, three hundred eighty-eight thousand, two hundred forty-nine".