525763409 has 2 divisors, whose sum is σ = 525763410. Its totient is φ = 525763408.

The previous prime is 525763387. The next prime is 525763489. The reversal of 525763409 is 904367525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 525693184 + 70225 = 22928^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 525763409 - 2⁸ = 525763153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (525763489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262881704 + 262881705.

It is an arithmetic number, because the mean of its divisors is an integer number (262881705).

Almost surely, 2^525763409 is an apocalyptic number.

It is an amenable number.

525763409 is a deficient number, since it is larger than the sum of its proper divisors (1).

525763409 is an equidigital number, since it uses as much as digits as its factorization.

525763409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 525763409 is about 22929.5313733186. The cubic root of 525763409 is about 807.1051513990.

The spelling of 525763409 in words is "five hundred twenty-five million, seven hundred sixty-three thousand, four hundred nine".