625272169 has 2 divisors, whose sum is σ = 625272170. Its totient is φ = 625272168.

The previous prime is 625272163. The next prime is 625272173. The reversal of 625272169 is 961272526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604914025 + 20358144 = 24595^2 + 4512^2 .

It is a cyclic number.

It is not a de Polignac number, because 625272169 - 2⁷ = 625272041 is a prime.

It is a super-3 number, since 3×625272169³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (625272163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312636084 + 312636085.

It is an arithmetic number, because the mean of its divisors is an integer number (312636085).

Almost surely, 2^625272169 is an apocalyptic number.

It is an amenable number.

625272169 is a deficient number, since it is larger than the sum of its proper divisors (1).

625272169 is an equidigital number, since it uses as much as digits as its factorization.

625272169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 625272169 is about 25005.4427875213. The cubic root of 625272169 is about 855.1120626459.

The spelling of 625272169 in words is "six hundred twenty-five million, two hundred seventy-two thousand, one hundred sixty-nine".