75025381 has 4 divisors (see below), whose sum is σ = 77053132. Its totient is φ = 72997632.

The previous prime is 75025361. The next prime is 75025393. The reversal of 75025381 is 18352057.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58752225 + 16273156 = 7665^2 + 4034^2 .

It is a cyclic number.

It is not a de Polignac number, because 75025381 - 2⁷ = 75025253 is a prime.

It is a super-2 number, since 2×75025381² = 11257615588390322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75025331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013820 + ... + 1013893.

It is an arithmetic number, because the mean of its divisors is an integer number (19263283).

Almost surely, 2^75025381 is an apocalyptic number.

It is an amenable number.

75025381 is a deficient number, since it is larger than the sum of its proper divisors (2027751).

75025381 is a wasteful number, since it uses less digits than its factorization.

75025381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027750.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 75025381 is about 8661.7192866082. The cubic root of 75025381 is about 421.7638987622.

The spelling of 75025381 in words is "seventy-five million, twenty-five thousand, three hundred eighty-one".