2545515755 has 4 divisors (see below), whose sum is σ = 3054618912. Its totient is φ = 2036412600.

The previous prime is 2545515733. The next prime is 2545515809. The reversal of 2545515755 is 5575155452.

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

It is not a de Polignac number, because 2545515755 - 2⁸ = 2545515499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254551571 + ... + 254551580.

It is an arithmetic number, because the mean of its divisors is an integer number (763654728).

Almost surely, 2^2545515755 is an apocalyptic number.

2545515755 is a deficient number, since it is larger than the sum of its proper divisors (509103157).

2545515755 is an equidigital number, since it uses as much as digits as its factorization.

2545515755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509103156.

The product of its digits is 875000, while the sum is 44.

The square root of 2545515755 is about 50453.1045130030. The cubic root of 2545515755 is about 1365.3959063953.

The spelling of 2545515755 in words is "two billion, five hundred forty-five million, five hundred fifteen thousand, seven hundred fifty-five".