2172625069 has 2 divisors, whose sum is σ = 2172625070. Its totient is φ = 2172625068.

The previous prime is 2172625067. The next prime is 2172625073. The reversal of 2172625069 is 9605262712.

2172625069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2131022569 + 41602500 = 46163^2 + 6450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172625069 - 2¹ = 2172625067 is a prime.

It is a super-2 number, since 2×2172625069² = 9440599380894509522, which contains 22 as substring.

Together with 2172625067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172625061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086312534 + 1086312535.

It is an arithmetic number, because the mean of its divisors is an integer number (1086312535).

Almost surely, 2^2172625069 is an apocalyptic number.

It is an amenable number.

2172625069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172625069 is an equidigital number, since it uses as much as digits as its factorization.

2172625069 is an evil number, because the sum of its binary digits is even.

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

The square root of 2172625069 is about 46611.4263780889. The cubic root of 2172625069 is about 1295.1744310687.

The spelling of 2172625069 in words is "two billion, one hundred seventy-two million, six hundred twenty-five thousand, sixty-nine".