525402505 has 12 divisors (see below), whose sum is σ = 636849036. Its totient is φ = 416120000.

The previous prime is 525402503. The next prime is 525402517. The reversal of 525402505 is 505204525.

It can be written as a sum of positive squares in 6 ways, for example, as 275161744 + 250240761 = 16588^2 + 15819^2 .

It is not a de Polignac number, because 525402505 - 2¹ = 525402503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (525402503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45855 + ... + 56155.

It is an arithmetic number, because the mean of its divisors is an integer number (53070753).

Almost surely, 2^525402505 is an apocalyptic number.

It is an amenable number.

525402505 is a deficient number, since it is larger than the sum of its proper divisors (111446531).

525402505 is a wasteful number, since it uses less digits than its factorization.

525402505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10508 (or 10407 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 525402505 is about 22921.6601711133. The cubic root of 525402505 is about 806.9204332360.

The spelling of 525402505 in words is "five hundred twenty-five million, four hundred two thousand, five hundred five".