25513331 has 2 divisors, whose sum is σ = 25513332. Its totient is φ = 25513330.

The previous prime is 25513309. The next prime is 25513337. The reversal of 25513331 is 13331552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25513331 - 2²² = 21319027 is a prime.

It is a super-2 number, since 2×25513331² = 1301860117431122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25513297 and 25513306.

It is not a weakly prime, because it can be changed into another prime (25513337) 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, 12756665 + 12756666.

It is an arithmetic number, because the mean of its divisors is an integer number (12756666).

Almost surely, 2^25513331 is an apocalyptic number.

25513331 is a deficient number, since it is larger than the sum of its proper divisors (1).

25513331 is an equidigital number, since it uses as much as digits as its factorization.

25513331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 23.

The square root of 25513331 is about 5051.0722624013. The cubic root of 25513331 is about 294.3895487180.

Adding to 25513331 its reverse (13331552), we get a palindrome (38844883).

The spelling of 25513331 in words is "twenty-five million, five hundred thirteen thousand, three hundred thirty-one".