25753121 has 4 divisors (see below), whose sum is σ = 25771200. Its totient is φ = 25735044.

The previous prime is 25753093. The next prime is 25753127. The reversal of 25753121 is 12135752.

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 a de Polignac number, because none of the positive numbers 2^k-25753121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25753127) 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, 6701 + ... + 9818.

It is an arithmetic number, because the mean of its divisors is an integer number (6442800).

Almost surely, 2^25753121 is an apocalyptic number.

It is an amenable number.

25753121 is a deficient number, since it is larger than the sum of its proper divisors (18079).

25753121 is a wasteful number, since it uses less digits than its factorization.

25753121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18078.

The product of its digits is 2100, while the sum is 26.

The square root of 25753121 is about 5074.7532944962. The cubic root of 25753121 is about 295.3089590815.

Adding to 25753121 its reverse (12135752), we get a palindrome (37888873).

It can be divided in two parts, 25753 and 121, that multiplied together give a palindrome (3116113).

The spelling of 25753121 in words is "twenty-five million, seven hundred fifty-three thousand, one hundred twenty-one".