25024981 has 2 divisors, whose sum is σ = 25024982. Its totient is φ = 25024980.

The previous prime is 25024963. The next prime is 25025041. The reversal of 25024981 is 18942052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24344356 + 680625 = 4934^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 25024981 - 2⁵ = 25024949 is a prime.

It is a super-2 number, since 2×25024981² = 1252499348100722, which contains 22 as substring.

It is equal to p_1567426 and since 25024981 and 1567426 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25024921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12512490 + 12512491.

It is an arithmetic number, because the mean of its divisors is an integer number (12512491).

Almost surely, 2^25024981 is an apocalyptic number.

It is an amenable number.

25024981 is a deficient number, since it is larger than the sum of its proper divisors (1).

25024981 is an equidigital number, since it uses as much as digits as its factorization.

25024981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 25024981 is about 5002.4974762612. The cubic root of 25024981 is about 292.4991345824.

The spelling of 25024981 in words is "twenty-five million, twenty-four thousand, nine hundred eighty-one".