2545706269 has 2 divisors, whose sum is σ = 2545706270. Its totient is φ = 2545706268.

The previous prime is 2545706243. The next prime is 2545706287. The reversal of 2545706269 is 9626075452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2491507225 + 54199044 = 49915^2 + 7362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2545706269 is a prime.

It is a super-2 number, since 2×2545706269² = 12961240816051800722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545706369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272853134 + 1272853135.

It is an arithmetic number, because the mean of its divisors is an integer number (1272853135).

Almost surely, 2^2545706269 is an apocalyptic number.

It is an amenable number.

2545706269 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545706269 is an equidigital number, since it uses as much as digits as its factorization.

2545706269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 46.

The square root of 2545706269 is about 50454.9925081750. The cubic root of 2545706269 is about 1365.4299689811.

The spelling of 2545706269 in words is "two billion, five hundred forty-five million, seven hundred six thousand, two hundred sixty-nine".