25391033 has 2 divisors, whose sum is σ = 25391034. Its totient is φ = 25391032.

The previous prime is 25391021. The next prime is 25391053. The reversal of 25391033 is 33019352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23164969 + 2226064 = 4813^2 + 1492^2 .

It is a cyclic number.

It is not a de Polignac number, because 25391033 - 2⁴ = 25391017 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25390993 and 25391011.

It is not a weakly prime, because it can be changed into another prime (25391053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12695516 + 12695517.

It is an arithmetic number, because the mean of its divisors is an integer number (12695517).

Almost surely, 2^25391033 is an apocalyptic number.

It is an amenable number.

25391033 is a deficient number, since it is larger than the sum of its proper divisors (1).

25391033 is an equidigital number, since it uses as much as digits as its factorization.

25391033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 25391033 is about 5038.9515774613. The cubic root of 25391033 is about 293.9184102657.

The spelling of 25391033 in words is "twenty-five million, three hundred ninety-one thousand, thirty-three".