525240665 has 16 divisors (see below), whose sum is σ = 635992320. Its totient is φ = 416404800.

The previous prime is 525240647. The next prime is 525240697. The reversal of 525240665 is 566042525.

It is not a de Polignac number, because 525240665 - 2¹⁴ = 525224281 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571076 + ... + 571994.

It is an arithmetic number, because the mean of its divisors is an integer number (39749520).

Almost surely, 2^525240665 is an apocalyptic number.

It is an amenable number.

525240665 is a deficient number, since it is larger than the sum of its proper divisors (110751655).

525240665 is a wasteful number, since it uses less digits than its factorization.

525240665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 525240665 is about 22918.1296139105. The cubic root of 525240665 is about 806.8375726908.

The spelling of 525240665 in words is "five hundred twenty-five million, two hundred forty thousand, six hundred sixty-five".