1725167121 has 8 divisors (see below), whose sum is σ = 2334554784. Its totient is φ = 1132945440.

The previous prime is 1725167117. The next prime is 1725167131. The reversal of 1725167121 is 1217615271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1725167121 - 2² = 1725167117 is a prime.

It is a super-4 number, since 4×1725167121⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is not an unprimeable number, because it can be changed into a prime (1725167131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4291260 + ... + 4291661.

It is an arithmetic number, because the mean of its divisors is an integer number (291819348).

Almost surely, 2^1725167121 is an apocalyptic number.

It is an amenable number.

1725167121 is a deficient number, since it is larger than the sum of its proper divisors (609387663).

1725167121 is an equidigital number, since it uses as much as digits as its factorization.

1725167121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8582991.

The product of its digits is 5880, while the sum is 33.

The square root of 1725167121 is about 41535.1311662790. The cubic root of 1725167121 is about 1199.3438822956.

The spelling of 1725167121 in words is "one billion, seven hundred twenty-five million, one hundred sixty-seven thousand, one hundred twenty-one".