75125472281 has 2 divisors, whose sum is σ = 75125472282. Its totient is φ = 75125472280.

The previous prime is 75125472271. The next prime is 75125472343. The reversal of 75125472281 is 18227452157.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54830905600 + 20294566681 = 234160^2 + 142459^2 .

It is a cyclic number.

It is not a de Polignac number, because 75125472281 - 2²² = 75121277977 is a prime.

It is a super-2 number, since 2×75125472281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75125472211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37562736140 + 37562736141.

It is an arithmetic number, because the mean of its divisors is an integer number (37562736141).

Almost surely, 2^75125472281 is an apocalyptic number.

It is an amenable number.

75125472281 is a deficient number, since it is larger than the sum of its proper divisors (1).

75125472281 is an equidigital number, since it uses as much as digits as its factorization.

75125472281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 313600, while the sum is 44.

The spelling of 75125472281 in words is "seventy-five billion, one hundred twenty-five million, four hundred seventy-two thousand, two hundred eighty-one".