25633973 has 2 divisors, whose sum is σ = 25633974. Its totient is φ = 25633972.

The previous prime is 25633957. The next prime is 25633997. The reversal of 25633973 is 37933652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25633969 + 4 = 5063^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 25633973 - 2⁴ = 25633957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25633913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12816986 + 12816987.

It is an arithmetic number, because the mean of its divisors is an integer number (12816987).

Almost surely, 2^25633973 is an apocalyptic number.

It is an amenable number.

25633973 is a deficient number, since it is larger than the sum of its proper divisors (1).

25633973 is an equidigital number, since it uses as much as digits as its factorization.

25633973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 38.

The square root of 25633973 is about 5063.0003950227. Note that the first 3 decimals coincide. The cubic root of 25633973 is about 294.8528347647.

The spelling of 25633973 in words is "twenty-five million, six hundred thirty-three thousand, nine hundred seventy-three".