2545245641 has 2 divisors, whose sum is σ = 2545245642. Its totient is φ = 2545245640.

The previous prime is 2545245631. The next prime is 2545245709. The reversal of 2545245641 is 1465425452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1356375241 + 1188870400 = 36829^2 + 34480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545245641 - 2¹⁴ = 2545229257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2545245595 and 2545245604.

It is not a weakly prime, because it can be changed into another prime (2545245631) 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, 1272622820 + 1272622821.

It is an arithmetic number, because the mean of its divisors is an integer number (1272622821).

Almost surely, 2^2545245641 is an apocalyptic number.

It is an amenable number.

2545245641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545245641 is an equidigital number, since it uses as much as digits as its factorization.

2545245641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192000, while the sum is 38.

The square root of 2545245641 is about 50450.4275601307. The cubic root of 2545245641 is about 1365.3476089667.

The spelling of 2545245641 in words is "two billion, five hundred forty-five million, two hundred forty-five thousand, six hundred forty-one".