2545807287 has 4 divisors (see below), whose sum is σ = 3394409720. Its totient is φ = 1697204856.

The previous prime is 2545807261. The next prime is 2545807289. The reversal of 2545807287 is 7827085452.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2545807287 - 2⁸ = 2545807031 is a prime.

It is a super-2 number, since 2×2545807287² = 12962269485084600738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545807289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424301212 + ... + 424301217.

It is an arithmetic number, because the mean of its divisors is an integer number (848602430).

Almost surely, 2^2545807287 is an apocalyptic number.

2545807287 is a deficient number, since it is larger than the sum of its proper divisors (848602433).

2545807287 is an equidigital number, since it uses as much as digits as its factorization.

2545807287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848602432.

The product of its (nonzero) digits is 1254400, while the sum is 48.

The square root of 2545807287 is about 50455.9935686535. The cubic root of 2545807287 is about 1365.4480296115.

The spelling of 2545807287 in words is "two billion, five hundred forty-five million, eight hundred seven thousand, two hundred eighty-seven".