25740973 has 2 divisors, whose sum is σ = 25740974. Its totient is φ = 25740972.

The previous prime is 25740947. The next prime is 25740983. The reversal of 25740973 is 37904752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25583364 + 157609 = 5058^2 + 397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25740973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25740983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12870486 + 12870487.

It is an arithmetic number, because the mean of its divisors is an integer number (12870487).

Almost surely, 2^25740973 is an apocalyptic number.

It is an amenable number.

25740973 is a deficient number, since it is larger than the sum of its proper divisors (1).

25740973 is an equidigital number, since it uses as much as digits as its factorization.

25740973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 25740973 is about 5073.5562478404. The cubic root of 25740973 is about 295.2625184002.

The spelling of 25740973 in words is "twenty-five million, seven hundred forty thousand, nine hundred seventy-three".