2578765485 has 16 divisors (see below), whose sum is σ = 4126688640. Its totient is φ = 1375120320.

The previous prime is 2578765457. The next prime is 2578765489. The reversal of 2578765485 is 5845678752.

It is not a de Polignac number, because 2578765485 - 2⁶ = 2578765421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578765489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132351 + ... + 150579.

It is an arithmetic number, because the mean of its divisors is an integer number (257918040).

Almost surely, 2^2578765485 is an apocalyptic number.

It is an amenable number.

2578765485 is a deficient number, since it is larger than the sum of its proper divisors (1547923155).

2578765485 is a wasteful number, since it uses less digits than its factorization.

2578765485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27668.

The product of its digits is 18816000, while the sum is 57.

The square root of 2578765485 is about 50781.5466975948. The cubic root of 2578765485 is about 1371.3151781634.

The spelling of 2578765485 in words is "two billion, five hundred seventy-eight million, seven hundred sixty-five thousand, four hundred eighty-five".