1101725605 has 4 divisors (see below), whose sum is σ = 1322070732. Its totient is φ = 881380480.

The previous prime is 1101725593. The next prime is 1101725609. The reversal of 1101725605 is 5065271011.

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 281132289 + 820593316 = 16767^2 + 28646^2 .

It is not a de Polignac number, because 1101725605 - 2¹⁹ = 1101201317 is a prime.

It is a super-3 number, since 3×1101725605³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101725609) 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, 110172556 + ... + 110172565.

It is an arithmetic number, because the mean of its divisors is an integer number (330517683).

Almost surely, 2^1101725605 is an apocalyptic number.

It is an amenable number.

1101725605 is a deficient number, since it is larger than the sum of its proper divisors (220345127).

1101725605 is an equidigital number, since it uses as much as digits as its factorization.

1101725605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220345126.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 1101725605 is about 33192.2521833033. The cubic root of 1101725605 is about 1032.8196236609.

Adding to 1101725605 its reverse (5065271011), we get a palindrome (6166996616).

The spelling of 1101725605 in words is "one billion, one hundred one million, seven hundred twenty-five thousand, six hundred five".