71725253 has 2 divisors, whose sum is σ = 71725254. Its totient is φ = 71725252.

The previous prime is 71725249. The next prime is 71725267. The reversal of 71725253 is 35252717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71537764 + 187489 = 8458^2 + 433^2 .

It is an emirp because it is prime and its reverse (35252717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71725253 - 2² = 71725249 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 (71725223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35862626 + 35862627.

It is an arithmetic number, because the mean of its divisors is an integer number (35862627).

Almost surely, 2^71725253 is an apocalyptic number.

It is an amenable number.

71725253 is a deficient number, since it is larger than the sum of its proper divisors (1).

71725253 is an equidigital number, since it uses as much as digits as its factorization.

71725253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14700, while the sum is 32.

The square root of 71725253 is about 8469.0762778475. The cubic root of 71725253 is about 415.4869264013.

The spelling of 71725253 in words is "seventy-one million, seven hundred twenty-five thousand, two hundred fifty-three".