2545742501 has 2 divisors, whose sum is σ = 2545742502. Its totient is φ = 2545742500.

The previous prime is 2545742497. The next prime is 2545742509. The reversal of 2545742501 is 1052475452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1799032225 + 746710276 = 42415^2 + 27326^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545742501 - 2² = 2545742497 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545742509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272871250 + 1272871251.

It is an arithmetic number, because the mean of its divisors is an integer number (1272871251).

Almost surely, 2^2545742501 is an apocalyptic number.

It is an amenable number.

2545742501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545742501 is an equidigital number, since it uses as much as digits as its factorization.

2545742501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56000, while the sum is 35.

The square root of 2545742501 is about 50455.3515595720. The cubic root of 2545742501 is about 1365.4364468198.

The spelling of 2545742501 in words is "two billion, five hundred forty-five million, seven hundred forty-two thousand, five hundred one".