25021973 has 2 divisors, whose sum is σ = 25021974. Its totient is φ = 25021972.

The previous prime is 25021963. The next prime is 25021979. The reversal of 25021973 is 37912052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18861649 + 6160324 = 4343^2 + 2482^2 .

It is a cyclic number.

It is not a de Polignac number, because 25021973 - 2¹⁸ = 24759829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25021979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12510986 + 12510987.

It is an arithmetic number, because the mean of its divisors is an integer number (12510987).

Almost surely, 2^25021973 is an apocalyptic number.

It is an amenable number.

25021973 is a deficient number, since it is larger than the sum of its proper divisors (1).

25021973 is an equidigital number, since it uses as much as digits as its factorization.

25021973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 25021973 is about 5002.1968173993. The cubic root of 25021973 is about 292.4874146581.

The spelling of 25021973 in words is "twenty-five million, twenty-one thousand, nine hundred seventy-three".