2578125 has 32 divisors (see below), whose sum is σ = 4687488. Its totient is φ = 1250000.

The previous prime is 2578117. The next prime is 2578133. The reversal of 2578125 is 5218752.

It is an interprime number because it is at equal distance from previous prime (2578117) and next prime (2578133).

It is not a de Polignac number, because 2578125 - 2³ = 2578117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2578092 and 2578101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234370 + ... + 234380.

It is an arithmetic number, because the mean of its divisors is an integer number (146484).

2^2578125 is an apocalyptic number.

2578125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2578125 is a deficient number, since it is larger than the sum of its proper divisors (2109363).

2578125 is an frugal number, since it uses more digits than its factorization.

2578125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49 (or 19 counting only the distinct ones).

The product of its digits is 5600, while the sum is 30.

The square root of 2578125 is about 1605.6540723331. The cubic root of 2578125 is about 137.1201638108.

It can be divided in two parts, 25 and 78125, that multiplied together give a 9-th power (1953125 = 5⁹).

The spelling of 2578125 in words is "two million, five hundred seventy-eight thousand, one hundred twenty-five".