75225525 has 24 divisors (see below), whose sum is σ = 129783360. Its totient is φ = 38375040.

The previous prime is 75225517. The next prime is 75225589. The reversal of 75225525 is 52552257.

75225525 = 1202² + 1203² + ... + 1251².

It is not a de Polignac number, because 75225525 - 2³ = 75225517 is a prime.

It is a super-2 number, since 2×75225525² = 11317759223051250, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 20080 + ... + 23529.

It is an arithmetic number, because the mean of its divisors is an integer number (5407640).

Almost surely, 2^75225525 is an apocalyptic number.

75225525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

75225525 is a deficient number, since it is larger than the sum of its proper divisors (54557835).

75225525 is a wasteful number, since it uses less digits than its factorization.

75225525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43645 (or 43640 counting only the distinct ones).

The product of its digits is 35000, while the sum is 33.

The square root of 75225525 is about 8673.2649561742. The cubic root of 75225525 is about 422.1386100080.

The spelling of 75225525 in words is "seventy-five million, two hundred twenty-five thousand, five hundred twenty-five".