82151325 has 54 divisors (see below), whose sum is σ = 151746426. Its totient is φ = 42469440.

The previous prime is 82151317. The next prime is 82151351. The reversal of 82151325 is 52315128.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10478169 + 71673156 = 3237^2 + 8466^2 .

It is not a de Polignac number, because 82151325 - 2³ = 82151317 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 989734 + ... + 989816.

It is an arithmetic number, because the mean of its divisors is an integer number (2810119).

Almost surely, 2^82151325 is an apocalyptic number.

It is an amenable number.

82151325 is a deficient number, since it is larger than the sum of its proper divisors (69595101).

82151325 is a wasteful number, since it uses less digits than its factorization.

82151325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 144 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 82151325 is about 9063.7368121542. The cubic root of 82151325 is about 434.7152317731.

The spelling of 82151325 in words is "eighty-two million, one hundred fifty-one thousand, three hundred twenty-five".