25345121 has 4 divisors (see below), whose sum is σ = 25527600. Its totient is φ = 25162644.

The previous prime is 25345097. The next prime is 25345157. The reversal of 25345121 is 12154352.

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 25345121 - 2¹⁸ = 25082977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25345721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91031 + ... + 91308.

It is an arithmetic number, because the mean of its divisors is an integer number (6381900).

Almost surely, 2^25345121 is an apocalyptic number.

It is an amenable number.

25345121 is a deficient number, since it is larger than the sum of its proper divisors (182479).

25345121 is a wasteful number, since it uses less digits than its factorization.

25345121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182478.

The product of its digits is 1200, while the sum is 23.

The square root of 25345121 is about 5034.3938066067. The cubic root of 25345121 is about 293.7411492127.

Adding to 25345121 its reverse (12154352), we get a palindrome (37499473).

The spelling of 25345121 in words is "twenty-five million, three hundred forty-five thousand, one hundred twenty-one".