2545261399 has 2 divisors, whose sum is σ = 2545261400. Its totient is φ = 2545261398.

The previous prime is 2545261393. The next prime is 2545261501. The reversal of 2545261399 is 9931625452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2545261399 - 2³ = 2545261391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545261391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272630699 + 1272630700.

It is an arithmetic number, because the mean of its divisors is an integer number (1272630700).

Almost surely, 2^2545261399 is an apocalyptic number.

2545261399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545261399 is an equidigital number, since it uses as much as digits as its factorization.

2545261399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 46.

The square root of 2545261399 is about 50450.5837329956. The cubic root of 2545261399 is about 1365.3504266519.

The spelling of 2545261399 in words is "two billion, five hundred forty-five million, two hundred sixty-one thousand, three hundred ninety-nine".