25105013 has 4 divisors (see below), whose sum is σ = 25123680. Its totient is φ = 25086348.

The previous prime is 25104953. The next prime is 25105019. The reversal of 25105013 is 31050152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25105013 - 2⁶ = 25104949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25104982 and 25105000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25105019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7145 + ... + 10062.

It is an arithmetic number, because the mean of its divisors is an integer number (6280920).

Almost surely, 2^25105013 is an apocalyptic number.

It is an amenable number.

25105013 is a deficient number, since it is larger than the sum of its proper divisors (18667).

25105013 is a wasteful number, since it uses less digits than its factorization.

25105013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18666.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 25105013 is about 5010.4902953703. The cubic root of 25105013 is about 292.8106150722.

Adding to 25105013 its reverse (31050152), we get a palindrome (56155165).

It can be divided in two parts, 2 and 5105013, that added together give a palindrome (5105015).

The spelling of 25105013 in words is "twenty-five million, one hundred five thousand, thirteen".