2545672399 has 2 divisors, whose sum is σ = 2545672400. Its totient is φ = 2545672398.

The previous prime is 2545672357. The next prime is 2545672433. The reversal of 2545672399 is 9932765452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2545672399 - 2¹³ = 2545664207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545672319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272836199 + 1272836200.

It is an arithmetic number, because the mean of its divisors is an integer number (1272836200).

Almost surely, 2^2545672399 is an apocalyptic number.

2545672399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545672399 is an equidigital number, since it uses as much as digits as its factorization.

2545672399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 52.

The square root of 2545672399 is about 50454.6568613840. The cubic root of 2545672399 is about 1365.4239133835.

The spelling of 2545672399 in words is "two billion, five hundred forty-five million, six hundred seventy-two thousand, three hundred ninety-nine".