25105025 has 12 divisors (see below), whose sum is σ = 33960624. Its totient is φ = 18258000.

The previous prime is 25105019. The next prime is 25105027. The reversal of 25105025 is 52050152.

It is not a de Polignac number, because 25105025 - 2²⁰ = 24056449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25104988 and 25105006.

It is not an unprimeable number, because it can be changed into a prime (25105027) 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, 45371 + ... + 45920.

It is an arithmetic number, because the mean of its divisors is an integer number (2830052).

Almost surely, 2^25105025 is an apocalyptic number.

25105025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25105025 is a deficient number, since it is larger than the sum of its proper divisors (8855599).

25105025 is a wasteful number, since it uses less digits than its factorization.

25105025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91312 (or 91307 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 25105025 is about 5010.4914928578. The cubic root of 25105025 is about 292.8106617259.

Adding to 25105025 its reverse (52050152), we get a palindrome (77155177).

The spelling of 25105025 in words is "twenty-five million, one hundred five thousand, twenty-five".