525508725505 has 4 divisors (see below), whose sum is σ = 630610470612. Its totient is φ = 420406980400.

The previous prime is 525508725503. The next prime is 525508725517. The reversal of 525508725505 is 505527805525.

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 70184725776 + 455323999729 = 264924^2 + 674777^2 .

It is not a de Polignac number, because 525508725505 - 2¹ = 525508725503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525508725503) 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, 52550872546 + ... + 52550872555.

It is an arithmetic number, because the mean of its divisors is an integer number (157652617653).

Almost surely, 2^525508725505 is an apocalyptic number.

It is an amenable number.

525508725505 is a deficient number, since it is larger than the sum of its proper divisors (105101745107).

525508725505 is a wasteful number, since it uses less digits than its factorization.

525508725505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105101745106.

The product of its (nonzero) digits is 3500000, while the sum is 49.

The spelling of 525508725505 in words is "five hundred twenty-five billion, five hundred eight million, seven hundred twenty-five thousand, five hundred five".