75216725 has 12 divisors (see below), whose sum is σ = 98178240. Its totient is φ = 57006000.

The previous prime is 75216703. The next prime is 75216727. The reversal of 75216725 is 52761257.

It is a happy number.

It is not a de Polignac number, because 75216725 - 2⁸ = 75216469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75216727) 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 11 ways as a sum of consecutive naturals, for example, 78701 + ... + 79650.

It is an arithmetic number, because the mean of its divisors is an integer number (8181520).

Almost surely, 2^75216725 is an apocalyptic number.

It is an amenable number.

75216725 is a deficient number, since it is larger than the sum of its proper divisors (22961515).

75216725 is a wasteful number, since it uses less digits than its factorization.

75216725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158380 (or 158375 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 75216725 is about 8672.7576352623. The cubic root of 75216725 is about 422.1221485537.

The spelling of 75216725 in words is "seventy-five million, two hundred sixteen thousand, seven hundred twenty-five".