2528372545 has 4 divisors (see below), whose sum is σ = 3034047060. Its totient is φ = 2022698032.

The previous prime is 2528372537. The next prime is 2528372563. The reversal of 2528372545 is 5452738252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1871168049 + 657204496 = 43257^2 + 25636^2 .

It is a cyclic number.

It is not a de Polignac number, because 2528372545 - 2³ = 2528372537 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 252837250 + ... + 252837259.

It is an arithmetic number, because the mean of its divisors is an integer number (758511765).

Almost surely, 2^2528372545 is an apocalyptic number.

It is an amenable number.

2528372545 is a deficient number, since it is larger than the sum of its proper divisors (505674515).

2528372545 is an equidigital number, since it uses as much as digits as its factorization.

2528372545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505674514.

The product of its digits is 672000, while the sum is 43.

The square root of 2528372545 is about 50282.9249845313. The cubic root of 2528372545 is about 1362.3238357094.

The spelling of 2528372545 in words is "two billion, five hundred twenty-eight million, three hundred seventy-two thousand, five hundred forty-five".