2647578125 has 16 divisors (see below), whose sum is σ = 3309561840. Its totient is φ = 2118000000.

The previous prime is 2647578119. The next prime is 2647578127. The reversal of 2647578125 is 5218757462.

It can be written as a sum of positive squares in 8 ways, for example, as 2529486436 + 118091689 = 50294^2 + 10867^2 .

It is not a de Polignac number, because 2647578125 - 2¹⁸ = 2647315981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2647578125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2647578127) 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, 61181 + ... + 95069.

It is an arithmetic number, because the mean of its divisors is an integer number (206847615).

Almost surely, 2^2647578125 is an apocalyptic number.

2647578125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2647578125 is a deficient number, since it is larger than the sum of its proper divisors (661983715).

2647578125 is an frugal number, since it uses more digits than its factorization.

2647578125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33924 (or 33894 counting only the distinct ones).

The product of its digits is 940800, while the sum is 47.

The square root of 2647578125 is about 51454.6219984172. The cubic root of 2647578125 is about 1383.4058082059.

The spelling of 2647578125 in words is "two billion, six hundred forty-seven million, five hundred seventy-eight thousand, one hundred twenty-five".