2578025 has 12 divisors (see below), whose sum is σ = 3231564. Its totient is φ = 2040000.

The previous prime is 2578019. The next prime is 2578027. The reversal of 2578025 is 5208752.

It can be written as a sum of positive squares in 6 ways, for example, as 94249 + 2483776 = 307^2 + 1576^2 .

It is not a de Polignac number, because 2578025 - 2¹⁸ = 2315881 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2578027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2015 + ... + 3035.

It is an arithmetic number, because the mean of its divisors is an integer number (269297).

2^2578025 is an apocalyptic number.

2578025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2578025 is a deficient number, since it is larger than the sum of its proper divisors (653539).

2578025 is a wasteful number, since it uses less digits than its factorization.

2578025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1127 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 2578025 is about 1605.6229320734. The cubic root of 2578025 is about 137.1183909211.

The spelling of 2578025 in words is "two million, five hundred seventy-eight thousand, twenty-five".