25311121 has 4 divisors (see below), whose sum is σ = 27612144. Its totient is φ = 23010100.

The previous prime is 25311119. The next prime is 25311127. The reversal of 25311121 is 12111352.

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 25311121 - 2¹ = 25311119 is a prime.

It is a super-3 number, since 3×25311121³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25311095 and 25311104.

It is not an unprimeable number, because it can be changed into a prime (25311127) 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, 1150495 + ... + 1150516.

It is an arithmetic number, because the mean of its divisors is an integer number (6903036).

Almost surely, 2^25311121 is an apocalyptic number.

It is an amenable number.

25311121 is a deficient number, since it is larger than the sum of its proper divisors (2301023).

25311121 is a wasteful number, since it uses less digits than its factorization.

25311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301022.

The product of its digits is 60, while the sum is 16.

The square root of 25311121 is about 5031.0159013861. The cubic root of 25311121 is about 293.6097410378.

Adding to 25311121 its reverse (12111352), we get a palindrome (37422473).

The spelling of 25311121 in words is "twenty-five million, three hundred eleven thousand, one hundred twenty-one".