2545257784 has 32 divisors (see below), whose sum is σ = 5032414800. Its totient is φ = 1203517440.

The previous prime is 2545257779. The next prime is 2545257791. The reversal of 2545257784 is 4877525452.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73194 + ... + 102214.

Almost surely, 2^2545257784 is an apocalyptic number.

It is an amenable number.

2545257784 is a deficient number, since it is larger than the sum of its proper divisors (2487157016).

2545257784 is a wasteful number, since it uses less digits than its factorization.

2545257784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29623 (or 29619 counting only the distinct ones).

The product of its digits is 3136000, while the sum is 49.

The square root of 2545257784 is about 50450.5479058454. The cubic root of 2545257784 is about 1365.3497802555.

The spelling of 2545257784 in words is "two billion, five hundred forty-five million, two hundred fifty-seven thousand, seven hundred eighty-four".