75217425 has 12 divisors (see below), whose sum is σ = 124359600. Its totient is φ = 40115920.

The previous prime is 75217403. The next prime is 75217481. The reversal of 75217425 is 52471257.

It is not a de Polignac number, because 75217425 - 2⁶ = 75217361 is a prime.

It is a super-2 number, since 2×75217425² = 11315322047261250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 501375 + ... + 501524.

It is an arithmetic number, because the mean of its divisors is an integer number (10363300).

Almost surely, 2^75217425 is an apocalyptic number.

75217425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

75217425 is a deficient number, since it is larger than the sum of its proper divisors (49142175).

75217425 is a wasteful number, since it uses less digits than its factorization.

75217425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002912 (or 1002907 counting only the distinct ones).

The product of its digits is 19600, while the sum is 33.

The square root of 75217425 is about 8672.7979914212. The cubic root of 75217425 is about 422.1234580346.

The spelling of 75217425 in words is "seventy-five million, two hundred seventeen thousand, four hundred twenty-five".