2578252555 has 8 divisors (see below), whose sum is σ = 3275897472. Its totient is φ = 1941272448.

The previous prime is 2578252529. The next prime is 2578252559. The reversal of 2578252555 is 5552528752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2578252555 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2578252559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15166107 + ... + 15166276.

It is an arithmetic number, because the mean of its divisors is an integer number (409487184).

Almost surely, 2^2578252555 is an apocalyptic number.

2578252555 is a deficient number, since it is larger than the sum of its proper divisors (697644917).

2578252555 is a wasteful number, since it uses less digits than its factorization.

2578252555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30332405.

The product of its digits is 1400000, while the sum is 46.

The square root of 2578252555 is about 50776.4960882493. The cubic root of 2578252555 is about 1371.2242515372.

The spelling of 2578252555 in words is "two billion, five hundred seventy-eight million, two hundred fifty-two thousand, five hundred fifty-five".