75425587 has 4 divisors (see below), whose sum is σ = 75808656. Its totient is φ = 75042520.

The previous prime is 75425563. The next prime is 75425591. The reversal of 75425587 is 78552457.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78552457 = 6703 ⋅11719.

It is a cyclic number.

It is not a de Polignac number, because 75425587 - 2¹¹ = 75423539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75422587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191239 + ... + 191632.

It is an arithmetic number, because the mean of its divisors is an integer number (18952164).

Almost surely, 2^75425587 is an apocalyptic number.

75425587 is a deficient number, since it is larger than the sum of its proper divisors (383069).

75425587 is a wasteful number, since it uses less digits than its factorization.

75425587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383068.

The product of its digits is 392000, while the sum is 43.

The square root of 75425587 is about 8684.7905559086. The cubic root of 75425587 is about 422.5125040941.

The spelling of 75425587 in words is "seventy-five million, four hundred twenty-five thousand, five hundred eighty-seven".