1153725173 has 4 divisors (see below), whose sum is σ = 1154890368. Its totient is φ = 1152559980.

The previous prime is 1153725169. The next prime is 1153725187. The reversal of 1153725173 is 3715273511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3715273511 = 23209 ⋅160079.

It is a cyclic number.

It is not a de Polignac number, because 1153725173 - 2² = 1153725169 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 (1153725073) 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, 581111 + ... + 583092.

It is an arithmetic number, because the mean of its divisors is an integer number (288722592).

Almost surely, 2^1153725173 is an apocalyptic number.

It is an amenable number.

1153725173 is a deficient number, since it is larger than the sum of its proper divisors (1165195).

1153725173 is an equidigital number, since it uses as much as digits as its factorization.

1153725173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165194.

The product of its digits is 22050, while the sum is 35.

The square root of 1153725173 is about 33966.5301878187. The cubic root of 1153725173 is about 1048.8195874580.

Adding to 1153725173 its reverse (3715273511), we get a palindrome (4868998684).

The spelling of 1153725173 in words is "one billion, one hundred fifty-three million, seven hundred twenty-five thousand, one hundred seventy-three".