25352513 has 4 divisors (see below), whose sum is σ = 26170368. Its totient is φ = 24534660.

The previous prime is 25352501. The next prime is 25352519. The reversal of 25352513 is 31525352.

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 25352513 - 2⁶ = 25352449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (25352519) 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, 408881 + ... + 408942.

It is an arithmetic number, because the mean of its divisors is an integer number (6542592).

Almost surely, 2^25352513 is an apocalyptic number.

It is an amenable number.

25352513 is a deficient number, since it is larger than the sum of its proper divisors (817855).

25352513 is an equidigital number, since it uses as much as digits as its factorization.

25352513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817854.

The product of its digits is 4500, while the sum is 26.

The square root of 25352513 is about 5035.1279030428. The cubic root of 25352513 is about 293.7697033411.

Adding to 25352513 its reverse (31525352), we get a palindrome (56877865).

The spelling of 25352513 in words is "twenty-five million, three hundred fifty-two thousand, five hundred thirteen".