2545972069 has 2 divisors, whose sum is σ = 2545972070. Its totient is φ = 2545972068.

The previous prime is 2545972057. The next prime is 2545972073. The reversal of 2545972069 is 9602795452.

2545972069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2536331044 + 9641025 = 50362^2 + 3105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545972069 - 2¹⁹ = 2545447781 is a prime.

It is a super-2 number, since 2×2545972069² = 12963947552256281522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545972049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272986034 + 1272986035.

It is an arithmetic number, because the mean of its divisors is an integer number (1272986035).

Almost surely, 2^2545972069 is an apocalyptic number.

It is an amenable number.

2545972069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545972069 is an equidigital number, since it uses as much as digits as its factorization.

2545972069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 2545972069 is about 50457.6264701383. The cubic root of 2545972069 is about 1365.4774893437.

The spelling of 2545972069 in words is "two billion, five hundred forty-five million, nine hundred seventy-two thousand, sixty-nine".