825013987 has 4 divisors (see below), whose sum is σ = 942873136. Its totient is φ = 707154840.

The previous prime is 825013967. The next prime is 825014023. The reversal of 825013987 is 789310528.

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

It is a de Polignac number, because none of the positive numbers 2^k-825013987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825013967) 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, 58929564 + ... + 58929577.

It is an arithmetic number, because the mean of its divisors is an integer number (235718284).

Almost surely, 2^825013987 is an apocalyptic number.

825013987 is a deficient number, since it is larger than the sum of its proper divisors (117859149).

825013987 is a wasteful number, since it uses less digits than its factorization.

825013987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117859148.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 825013987 is about 28723.0567140755. The cubic root of 825013987 is about 937.8940279564.

The spelling of 825013987 in words is "eight hundred twenty-five million, thirteen thousand, nine hundred eighty-seven".