825137087 has 4 divisors (see below), whose sum is σ = 853590120. Its totient is φ = 796684056.

The previous prime is 825137083. The next prime is 825137099. The reversal of 825137087 is 780731528.

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

It is not a de Polignac number, because 825137087 - 2² = 825137083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825137083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14226473 + ... + 14226530.

It is an arithmetic number, because the mean of its divisors is an integer number (213397530).

Almost surely, 2^825137087 is an apocalyptic number.

825137087 is a deficient number, since it is larger than the sum of its proper divisors (28453033).

825137087 is a wasteful number, since it uses less digits than its factorization.

825137087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28453032.

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 825137087 is about 28725.1995119268. The cubic root of 825137087 is about 937.9406732314.

The spelling of 825137087 in words is "eight hundred twenty-five million, one hundred thirty-seven thousand, eighty-seven".