525505345 has 4 divisors (see below), whose sum is σ = 630606420. Its totient is φ = 420404272.

The previous prime is 525505303. The next prime is 525505349. The reversal of 525505345 is 543505525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 163021824 + 362483521 = 12768^2 + 19039^2 .

It is a cyclic number.

It is not a de Polignac number, because 525505345 - 2¹⁹ = 524981057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 525505345.

It is not an unprimeable number, because it can be changed into a prime (525505349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52550530 + ... + 52550539.

It is an arithmetic number, because the mean of its divisors is an integer number (157651605).

Almost surely, 2^525505345 is an apocalyptic number.

It is an amenable number.

525505345 is a deficient number, since it is larger than the sum of its proper divisors (105101075).

525505345 is a wasteful number, since it uses less digits than its factorization.

525505345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105101074.

The product of its (nonzero) digits is 75000, while the sum is 34.

The square root of 525505345 is about 22923.9033543592. The cubic root of 525505345 is about 806.9730774994.

The spelling of 525505345 in words is "five hundred twenty-five million, five hundred five thousand, three hundred forty-five".