2578255937 has 4 divisors (see below), whose sum is σ = 2578735236. Its totient is φ = 2577776640.

The previous prime is 2578255879. The next prime is 2578255943. The reversal of 2578255937 is 7395528752.

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 1619982001 + 958273936 = 40249^2 + 30956^2 .

It is a cyclic number.

It is not a de Polignac number, because 2578255937 - 2⁸ = 2578255681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2578255637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231488 + ... + 242369.

It is an arithmetic number, because the mean of its divisors is an integer number (644683809).

Almost surely, 2^2578255937 is an apocalyptic number.

It is an amenable number.

2578255937 is a deficient number, since it is larger than the sum of its proper divisors (479299).

2578255937 is an equidigital number, since it uses as much as digits as its factorization.

2578255937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479298.

The product of its digits is 5292000, while the sum is 53.

The square root of 2578255937 is about 50776.5293910484. The cubic root of 2578255937 is about 1371.2248511007.

The spelling of 2578255937 in words is "two billion, five hundred seventy-eight million, two hundred fifty-five thousand, nine hundred thirty-seven".