25650025 has 12 divisors (see below), whose sum is σ = 33677532. Its totient is φ = 19312640.

The previous prime is 25650017. The next prime is 25650029. The reversal of 25650025 is 52005652.

It can be written as a sum of positive squares in 6 ways, for example, as 1806336 + 23843689 = 1344^2 + 4883^2 .

It is not a de Polignac number, because 25650025 - 2³ = 25650017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25650029) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 29752 + ... + 30601.

It is an arithmetic number, because the mean of its divisors is an integer number (2806461).

Almost surely, 2^25650025 is an apocalyptic number.

25650025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25650025 is a deficient number, since it is larger than the sum of its proper divisors (8027507).

25650025 is a wasteful number, since it uses less digits than its factorization.

25650025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60380 (or 60375 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 25650025 is about 5064.5853729600. The cubic root of 25650025 is about 294.9143675610.

Adding to 25650025 its reverse (52005652), we get a palindrome (77655677).

The spelling of 25650025 in words is "twenty-five million, six hundred fifty thousand, twenty-five".