25977625 has 8 divisors (see below), whose sum is σ = 32420232. Its totient is φ = 20782000.

The previous prime is 25977583. The next prime is 25977629. The reversal of 25977625 is 52677952.

It can be written as a sum of positive squares in 4 ways, for example, as 5934096 + 20043529 = 2436^2 + 4477^2 .

It is not a de Polignac number, because 25977625 - 2⁹ = 25977113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25977629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103786 + ... + 104035.

It is an arithmetic number, because the mean of its divisors is an integer number (4052529).

Almost surely, 2^25977625 is an apocalyptic number.

25977625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25977625 is a deficient number, since it is larger than the sum of its proper divisors (6442607).

25977625 is an equidigital number, since it uses as much as digits as its factorization.

25977625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207836 (or 207826 counting only the distinct ones).

The product of its digits is 264600, while the sum is 43.

The square root of 25977625 is about 5096.8249920907. The cubic root of 25977625 is about 296.1646005929.

The spelling of 25977625 in words is "twenty-five million, nine hundred seventy-seven thousand, six hundred twenty-five".