525287069 has 8 divisors (see below), whose sum is σ = 528909048. Its totient is φ = 521678080.

The previous prime is 525287057. The next prime is 525287093. The reversal of 525287069 is 960782525.

It can be written as a sum of positive squares in 4 ways, for example, as 102779044 + 422508025 = 10138^2 + 20555^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 525287069 - 2¹⁶ = 525221533 is a prime.

It is a super-2 number, since 2×525287069² = 551853009717221522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525281069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86129 + ... + 92025.

It is an arithmetic number, because the mean of its divisors is an integer number (66113631).

Almost surely, 2^525287069 is an apocalyptic number.

It is an amenable number.

525287069 is a deficient number, since it is larger than the sum of its proper divisors (3621979).

525287069 is a wasteful number, since it uses less digits than its factorization.

525287069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6495.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 525287069 is about 22919.1419778315. The cubic root of 525287069 is about 806.8613328390.

The spelling of 525287069 in words is "five hundred twenty-five million, two hundred eighty-seven thousand, sixty-nine".