525552805 has 4 divisors (see below), whose sum is σ = 630663372. Its totient is φ = 420442240.

The previous prime is 525552799. The next prime is 525552809. The reversal of 525552805 is 508255525.

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 52794756 + 472758049 = 7266^2 + 21743^2 .

It is a de Polignac number, because none of the positive numbers 2^k-525552805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525552809) 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, 52555276 + ... + 52555285.

It is an arithmetic number, because the mean of its divisors is an integer number (157665843).

Almost surely, 2^525552805 is an apocalyptic number.

It is an amenable number.

525552805 is a deficient number, since it is larger than the sum of its proper divisors (105110567).

525552805 is a wasteful number, since it uses less digits than its factorization.

525552805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105110566.

The product of its (nonzero) digits is 100000, while the sum is 37.

The square root of 525552805 is about 22924.9384950102. The cubic root of 525552805 is about 806.9973701729.

The spelling of 525552805 in words is "five hundred twenty-five million, five hundred fifty-two thousand, eight hundred five".