180725801 has 2 divisors, whose sum is σ = 180725802. Its totient is φ = 180725800.

The previous prime is 180725711. The next prime is 180725833. The reversal of 180725801 is 108527081.

It is a happy number.

It is an a-pointer prime, because the next prime (180725833) can be obtained adding 180725801 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180499225 + 226576 = 13435^2 + 476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180725801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (180725101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90362900 + 90362901.

It is an arithmetic number, because the mean of its divisors is an integer number (90362901).

Almost surely, 2^180725801 is an apocalyptic number.

It is an amenable number.

180725801 is a deficient number, since it is larger than the sum of its proper divisors (1).

180725801 is an equidigital number, since it uses as much as digits as its factorization.

180725801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 180725801 is about 13443.4296591309. The cubic root of 180725801 is about 565.3794939190.

The spelling of 180725801 in words is "one hundred eighty million, seven hundred twenty-five thousand, eight hundred one".