25061121 has 6 divisors (see below), whose sum is σ = 36199410. Its totient is φ = 16707408.

The previous prime is 25061107. The next prime is 25061123. The reversal of 25061121 is 12116052.

25061121 is a `hidden beast` number, since 2 + 50 + 611 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13771521 + 11289600 = 3711^2 + 3360^2 .

It is not a de Polignac number, because 25061121 - 2⁷ = 25060993 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25061094 and 25061103.

It is not an unprimeable number, because it can be changed into a prime (25061123) 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 5 ways as a sum of consecutive naturals, for example, 1392276 + ... + 1392293.

It is an arithmetic number, because the mean of its divisors is an integer number (6033235).

Almost surely, 2^25061121 is an apocalyptic number.

It is an amenable number.

25061121 is a deficient number, since it is larger than the sum of its proper divisors (11138289).

25061121 is a wasteful number, since it uses less digits than its factorization.

25061121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784575 (or 2784572 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 25061121 is about 5006.1083687831. The cubic root of 25061121 is about 292.6398717404.

Adding to 25061121 its reverse (12116052), we get a palindrome (37177173).

The spelling of 25061121 in words is "twenty-five million, sixty-one thousand, one hundred twenty-one".