75125249 has 4 divisors (see below), whose sum is σ = 76154436. Its totient is φ = 74096064.

The previous prime is 75125201. The next prime is 75125251. The reversal of 75125249 is 94252157.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57274624 + 17850625 = 7568^2 + 4225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75125249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75125279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514484 + ... + 514629.

It is an arithmetic number, because the mean of its divisors is an integer number (19038609).

Almost surely, 2^75125249 is an apocalyptic number.

It is an amenable number.

75125249 is a deficient number, since it is larger than the sum of its proper divisors (1029187).

75125249 is a wasteful number, since it uses less digits than its factorization.

75125249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029186.

The product of its digits is 25200, while the sum is 35.

The square root of 75125249 is about 8667.4822757246. The cubic root of 75125249 is about 421.9509556444.

The spelling of 75125249 in words is "seventy-five million, one hundred twenty-five thousand, two hundred forty-nine".