2525078305 has 4 divisors (see below), whose sum is σ = 3030093972. Its totient is φ = 2020062640.

The previous prime is 2525078291. The next prime is 2525078327. The reversal of 2525078305 is 5038705252.

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 1140345361 + 1384732944 = 33769^2 + 37212^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2525078305 is a prime.

It is an alternating number because its digits alternate between even and odd.

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, 252507826 + ... + 252507835.

It is an arithmetic number, because the mean of its divisors is an integer number (757523493).

Almost surely, 2^2525078305 is an apocalyptic number.

It is an amenable number.

2525078305 is a deficient number, since it is larger than the sum of its proper divisors (505015667).

2525078305 is an equidigital number, since it uses as much as digits as its factorization.

2525078305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505015666.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 2525078305 is about 50250.1572634355. The cubic root of 2525078305 is about 1361.7319171162.

The spelling of 2525078305 in words is "two billion, five hundred twenty-five million, seventy-eight thousand, three hundred five".