373625561 has 2 divisors, whose sum is σ = 373625562. Its totient is φ = 373625560.

The previous prime is 373625543. The next prime is 373625587. The reversal of 373625561 is 165526373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371718400 + 1907161 = 19280^2 + 1381^2 .

It is an emirp because it is prime and its reverse (165526373) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-373625561 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (373625591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186812780 + 186812781.

It is an arithmetic number, because the mean of its divisors is an integer number (186812781).

Almost surely, 2^373625561 is an apocalyptic number.

It is an amenable number.

373625561 is a deficient number, since it is larger than the sum of its proper divisors (1).

373625561 is an equidigital number, since it uses as much as digits as its factorization.

373625561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 38.

The square root of 373625561 is about 19329.3962916590. The cubic root of 373625561 is about 720.2426914632.

The spelling of 373625561 in words is "three hundred seventy-three million, six hundred twenty-five thousand, five hundred sixty-one".