25222513 has 4 divisors (see below), whose sum is σ = 26319168. Its totient is φ = 24125860.

The previous prime is 25222471. The next prime is 25222529. The reversal of 25222513 is 31522252.

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 25222513 - 2¹⁷ = 25091441 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (25222573) 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, 548293 + ... + 548338.

It is an arithmetic number, because the mean of its divisors is an integer number (6579792).

Almost surely, 2^25222513 is an apocalyptic number.

25222513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25222513 is a deficient number, since it is larger than the sum of its proper divisors (1096655).

25222513 is a wasteful number, since it uses less digits than its factorization.

25222513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096654.

The product of its digits is 1200, while the sum is 22.

The square root of 25222513 is about 5022.2020070881. The cubic root of 25222513 is about 293.2667219902.

Adding to 25222513 its reverse (31522252), we get a palindrome (56744765).

The spelling of 25222513 in words is "twenty-five million, two hundred twenty-two thousand, five hundred thirteen".