25871633 has 2 divisors, whose sum is σ = 25871634. Its totient is φ = 25871632.

The previous prime is 25871627. The next prime is 25871647. The reversal of 25871633 is 33617852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25472209 + 399424 = 5047^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 25871633 - 2⁴ = 25871617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25871593 and 25871602.

It is not a weakly prime, because it can be changed into another prime (25871623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12935816 + 12935817.

It is an arithmetic number, because the mean of its divisors is an integer number (12935817).

Almost surely, 2^25871633 is an apocalyptic number.

It is an amenable number.

25871633 is a deficient number, since it is larger than the sum of its proper divisors (1).

25871633 is an equidigital number, since it uses as much as digits as its factorization.

25871633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 25871633 is about 5086.4165185325. The cubic root of 25871633 is about 295.7612551681.

The spelling of 25871633 in words is "twenty-five million, eight hundred seventy-one thousand, six hundred thirty-three".