25733121 has 32 divisors (see below), whose sum is σ = 38154240. Its totient is φ = 15353856.

The previous prime is 25733119. The next prime is 25733161. The reversal of 25733121 is 12133752.

It is not a de Polignac number, because 25733121 - 2¹ = 25733119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25733091 and 25733100.

It is not an unprimeable number, because it can be changed into a prime (25733161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187765 + ... + 187901.

It is an arithmetic number, because the mean of its divisors is an integer number (1192320).

Almost surely, 2^25733121 is an apocalyptic number.

It is an amenable number.

25733121 is a deficient number, since it is larger than the sum of its proper divisors (12421119).

25733121 is a wasteful number, since it uses less digits than its factorization.

25733121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313.

The product of its digits is 1260, while the sum is 24.

The square root of 25733121 is about 5072.7823726235. The cubic root of 25733121 is about 295.2324931551.

Adding to 25733121 its reverse (12133752), we get a palindrome (37866873).

The spelling of 25733121 in words is "twenty-five million, seven hundred thirty-three thousand, one hundred twenty-one".