25015013 has 2 divisors, whose sum is σ = 25015014. Its totient is φ = 25015012.

The previous prime is 25014991. The next prime is 25015021. The reversal of 25015013 is 31051052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22118209 + 2896804 = 4703^2 + 1702^2 .

It is a cyclic number.

It is not a de Polignac number, because 25015013 - 2⁸ = 25014757 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25014982 and 25015000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25015073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12507506 + 12507507.

It is an arithmetic number, because the mean of its divisors is an integer number (12507507).

Almost surely, 2^25015013 is an apocalyptic number.

It is an amenable number.

25015013 is a deficient number, since it is larger than the sum of its proper divisors (1).

25015013 is an equidigital number, since it uses as much as digits as its factorization.

25015013 is an evil number, because the sum of its binary digits is even.

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

The square root of 25015013 is about 5001.5010746775. The cubic root of 25015013 is about 292.4602931466.

Adding to 25015013 its reverse (31051052), we get a palindrome (56066065).

The spelling of 25015013 in words is "twenty-five million, fifteen thousand, thirteen".