75225521672 has 48 divisors (see below), whose sum is σ = 164446828560. Its totient is φ = 32166659616.

The previous prime is 75225521671. The next prime is 75225521689. The reversal of 75225521672 is 27612552257.

It is a happy number.

It is a super-2 number, since 2×75225521672² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75225521671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42938 + ... + 390249.

It is an arithmetic number, because the mean of its divisors is an integer number (3425975595).

Almost surely, 2^75225521672 is an apocalyptic number.

It is an amenable number.

75225521672 is an abundant number, since it is smaller than the sum of its proper divisors (89221306888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75225521672 is a wasteful number, since it uses less digits than its factorization.

75225521672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433650 (or 433639 counting only the distinct ones).

The product of its digits is 588000, while the sum is 44.

The spelling of 75225521672 in words is "seventy-five billion, two hundred twenty-five million, five hundred twenty-one thousand, six hundred seventy-two".