75078330525 has 72 divisors (see below), whose sum is σ = 148765032000. Its totient is φ = 35888832000.

The previous prime is 75078330461. The next prime is 75078330559. The reversal of 75078330525 is 52503387057.

75078330525 is a `hidden beast` number, since 7 + 50 + 78 + 3 + 3 + 0 + 525 = 666.

It is not a de Polignac number, because 75078330525 - 2⁶ = 75078330461 is a prime.

It is a super-2 number, since 2×75078330525² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 37900 + ... + 389349.

It is an arithmetic number, because the mean of its divisors is an integer number (2066181000).

Almost surely, 2^75078330525 is an apocalyptic number.

75078330525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

75078330525 is a deficient number, since it is larger than the sum of its proper divisors (73686701475).

75078330525 is a wasteful number, since it uses less digits than its factorization.

75078330525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427347 (or 427339 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The spelling of 75078330525 in words is "seventy-five billion, seventy-eight million, three hundred thirty thousand, five hundred twenty-five".