71625285 has 48 divisors (see below), whose sum is σ = 127960560. Its totient is φ = 37048320.

The previous prime is 71625263. The next prime is 71625329. The reversal of 71625285 is 58252617.

It is a happy number.

71625285 is a `hidden beast` number, since 7 + 1 + 625 + 28 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 27029601 + 44595684 = 5199^2 + 6678^2 .

It is not a de Polignac number, because 71625285 - 2¹³ = 71617093 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 266131 + ... + 266399.

It is an arithmetic number, because the mean of its divisors is an integer number (2665845).

Almost surely, 2^71625285 is an apocalyptic number.

It is an amenable number.

71625285 is a deficient number, since it is larger than the sum of its proper divisors (56335275).

71625285 is a wasteful number, since it uses less digits than its factorization.

71625285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 435 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 71625285 is about 8463.1722775801. The cubic root of 71625285 is about 415.2938065581.

The spelling of 71625285 in words is "seventy-one million, six hundred twenty-five thousand, two hundred eighty-five".