25030513 has 4 divisors (see below), whose sum is σ = 25063668. Its totient is φ = 24997360.

The previous prime is 25030507. The next prime is 25030519. The reversal of 25030513 is 31503052.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25030507) and next prime (25030519).

It can be written as a sum of positive squares in 2 ways, for example, as 7491169 + 17539344 = 2737^2 + 4188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25030513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25030519) 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, 15418 + ... + 16963.

It is an arithmetic number, because the mean of its divisors is an integer number (6265917).

Almost surely, 2^25030513 is an apocalyptic number.

It is an amenable number.

25030513 is a deficient number, since it is larger than the sum of its proper divisors (33155).

25030513 is an equidigital number, since it uses as much as digits as its factorization.

25030513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33154.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 25030513 is about 5003.0503695246. The cubic root of 25030513 is about 292.5206861938.

Adding to 25030513 its reverse (31503052), we get a palindrome (56533565).

The spelling of 25030513 in words is "twenty-five million, thirty thousand, five hundred thirteen".