1009725133 has 4 divisors (see below), whose sum is σ = 1013451328. Its totient is φ = 1005998940.

The previous prime is 1009725127. The next prime is 1009725169. The reversal of 1009725133 is 3315279001.

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.

It is a cyclic number.

It is not a de Polignac number, because 1009725133 - 2⁹ = 1009724621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1009725095 and 1009725104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009720133) 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, 1862691 + ... + 1863232.

It is an arithmetic number, because the mean of its divisors is an integer number (253362832).

Almost surely, 2^1009725133 is an apocalyptic number.

It is an amenable number.

1009725133 is a deficient number, since it is larger than the sum of its proper divisors (3726195).

1009725133 is an equidigital number, since it uses as much as digits as its factorization.

1009725133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726194.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1009725133 is about 31776.1724095272. The cubic root of 1009725133 is about 1003.2312587212.

The spelling of 1009725133 in words is "one billion, nine million, seven hundred twenty-five thousand, one hundred thirty-three".