825011819 has 4 divisors (see below), whose sum is σ = 873541944. Its totient is φ = 776481696.

The previous prime is 825011813. The next prime is 825011827. The reversal of 825011819 is 918110528.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825011819 is a prime.

It is a super-2 number, since 2×825011819² = 1361289002979377522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825011813) 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, 24265037 + ... + 24265070.

It is an arithmetic number, because the mean of its divisors is an integer number (218385486).

Almost surely, 2^825011819 is an apocalyptic number.

825011819 is a deficient number, since it is larger than the sum of its proper divisors (48530125).

825011819 is a wasteful number, since it uses less digits than its factorization.

825011819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48530124.

The product of its (nonzero) digits is 5760, while the sum is 35.

The square root of 825011819 is about 28723.0189743349. The cubic root of 825011819 is about 937.8932064123.

The spelling of 825011819 in words is "eight hundred twenty-five million, eleven thousand, eight hundred nineteen".