25011331 has 2 divisors, whose sum is σ = 25011332. Its totient is φ = 25011330.

The previous prime is 25011323. The next prime is 25011407. The reversal of 25011331 is 13311052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25011331 - 2³ = 25011323 is a prime.

It is a super-3 number, since 3×25011331³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (25011631) 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 as a sum of consecutive naturals, namely, 12505665 + 12505666.

It is an arithmetic number, because the mean of its divisors is an integer number (12505666).

Almost surely, 2^25011331 is an apocalyptic number.

25011331 is a deficient number, since it is larger than the sum of its proper divisors (1).

25011331 is an equidigital number, since it uses as much as digits as its factorization.

25011331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 25011331 is about 5001.1329716375. The cubic root of 25011331 is about 292.4459432088.

Adding to 25011331 its reverse (13311052), we get a palindrome (38322383).

The spelling of 25011331 in words is "twenty-five million, eleven thousand, three hundred thirty-one".