2525378615 has 4 divisors (see below), whose sum is σ = 3030454344. Its totient is φ = 2020302888.

The previous prime is 2525378567. The next prime is 2525378627. The reversal of 2525378615 is 5168735252.

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

It is a cyclic number.

It is not a de Polignac number, because 2525378615 - 2²² = 2521184311 is a prime.

It is a Duffinian number.

It is a congruent 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, 252537857 + ... + 252537866.

It is an arithmetic number, because the mean of its divisors is an integer number (757613586).

Almost surely, 2^2525378615 is an apocalyptic number.

2525378615 is a deficient number, since it is larger than the sum of its proper divisors (505075729).

2525378615 is an equidigital number, since it uses as much as digits as its factorization.

2525378615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505075728.

The product of its digits is 504000, while the sum is 44.

The square root of 2525378615 is about 50253.1453244471. The cubic root of 2525378615 is about 1361.7858990067.

The spelling of 2525378615 in words is "two billion, five hundred twenty-five million, three hundred seventy-eight thousand, six hundred fifteen".