75157745625 has 30 divisors (see below), whose sum is σ = 135658070834. Its totient is φ = 40084128000.

The previous prime is 75157745623. The next prime is 75157745657. The reversal of 75157745625 is 52654775157.

75157745625 is a `hidden beast` number, since 7 + 5 + 1 + 5 + 7 + 7 + 4 + 5 + 625 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 41220368784 + 33937376841 = 203028^2 + 184221^2 .

It is not a de Polignac number, because 75157745625 - 2¹ = 75157745623 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75157745623) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 6675064 + ... + 6686313.

Almost surely, 2^75157745625 is an apocalyptic number.

75157745625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

75157745625 is a deficient number, since it is larger than the sum of its proper divisors (60500325209).

75157745625 is a wasteful number, since it uses less digits than its factorization.

75157745625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13361403 (or 13361385 counting only the distinct ones).

The product of its digits is 10290000, while the sum is 54.

The spelling of 75157745625 in words is "seventy-five billion, one hundred fifty-seven million, seven hundred forty-five thousand, six hundred twenty-five".