825672919 has 4 divisors (see below), whose sum is σ = 825806800. Its totient is φ = 825539040.

The previous prime is 825672907. The next prime is 825672937. The reversal of 825672919 is 919276528.

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

It is a cyclic number.

It is not a de Polignac number, because 825672919 - 2¹⁹ = 825148631 is a prime.

It is a super-2 number, since 2×825672919² = 1363471538339961122, 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 (825172919) 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, 57219 + ... + 70180.

It is an arithmetic number, because the mean of its divisors is an integer number (206451700).

Almost surely, 2^825672919 is an apocalyptic number.

825672919 is a deficient number, since it is larger than the sum of its proper divisors (133881).

825672919 is a wasteful number, since it uses less digits than its factorization.

825672919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133880.

The product of its digits is 544320, while the sum is 49.

The square root of 825672919 is about 28734.5248612188. The cubic root of 825672919 is about 938.1436576344.

The spelling of 825672919 in words is "eight hundred twenty-five million, six hundred seventy-two thousand, nine hundred nineteen".