75257725573 has 2 divisors, whose sum is σ = 75257725574. Its totient is φ = 75257725572.

The previous prime is 75257725553. The next prime is 75257725579. The reversal of 75257725573 is 37552775257.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73800242244 + 1457483329 = 271662^2 + 38177^2 .

It is a cyclic number.

It is not a de Polignac number, because 75257725573 - 2⁹ = 75257725061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75257725579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37628862786 + 37628862787.

It is an arithmetic number, because the mean of its divisors is an integer number (37628862787).

Almost surely, 2^75257725573 is an apocalyptic number.

It is an amenable number.

75257725573 is a deficient number, since it is larger than the sum of its proper divisors (1).

75257725573 is an equidigital number, since it uses as much as digits as its factorization.

75257725573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18007500, while the sum is 55.

The spelling of 75257725573 in words is "seventy-five billion, two hundred fifty-seven million, seven hundred twenty-five thousand, five hundred seventy-three".