25361121 has 16 divisors (see below), whose sum is σ = 34320384. Its totient is φ = 16657104.

The previous prime is 25361113. The next prime is 25361123. The reversal of 25361121 is 12116352.

It is not a de Polignac number, because 25361121 - 2³ = 25361113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25361123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111610 + ... + 111836.

It is an arithmetic number, because the mean of its divisors is an integer number (2145024).

Almost surely, 2^25361121 is an apocalyptic number.

It is an amenable number.

25361121 is a deficient number, since it is larger than the sum of its proper divisors (8959263).

25361121 is a wasteful number, since it uses less digits than its factorization.

25361121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620.

The product of its digits is 360, while the sum is 21.

The square root of 25361121 is about 5035.9826250693. The cubic root of 25361121 is about 293.8029476913.

Adding to 25361121 its reverse (12116352), we get a palindrome (37477473).

The spelling of 25361121 in words is "twenty-five million, three hundred sixty-one thousand, one hundred twenty-one".