25620025 has 12 divisors (see below), whose sum is σ = 32154192. Its totient is φ = 20247440.

The previous prime is 25620017. The next prime is 25620059. The reversal of 25620025 is 52002652.

It is not a de Polignac number, because 25620025 - 2³ = 25620017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25619978 and 25620005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4099 + ... + 8248.

It is an arithmetic number, because the mean of its divisors is an integer number (2679516).

Almost surely, 2^25620025 is an apocalyptic number.

25620025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25620025 is a deficient number, since it is larger than the sum of its proper divisors (6534167).

25620025 is a wasteful number, since it uses less digits than its factorization.

25620025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12440 (or 12435 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25620025 is about 5061.6227635018. The cubic root of 25620025 is about 294.7993464573.

Adding to 25620025 its reverse (52002652), we get a palindrome (77622677).

The spelling of 25620025 in words is "twenty-five million, six hundred twenty thousand, twenty-five".