725873250161 has 8 divisors (see below), whose sum is σ = 727613061480. Its totient is φ = 724135004928.

The previous prime is 725873250103. The next prime is 725873250191. The reversal of 725873250161 is 161052378527.

It can be written as a sum of positive squares in 4 ways, for example, as 514427761 + 725358822400 = 22681^2 + 851680^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 725873250161 - 2¹⁰ = 725873249137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725873250101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539225 + ... + 1320041.

It is an arithmetic number, because the mean of its divisors is an integer number (90951632685).

Almost surely, 2^725873250161 is an apocalyptic number.

It is an amenable number.

725873250161 is a deficient number, since it is larger than the sum of its proper divisors (1739811319).

725873250161 is a wasteful number, since it uses less digits than its factorization.

725873250161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783043.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 725873250161 in words is "seven hundred twenty-five billion, eight hundred seventy-three million, two hundred fifty thousand, one hundred sixty-one".