825449494 has 4 divisors (see below), whose sum is σ = 1238174244. Its totient is φ = 412724746.

The previous prime is 825449489. The next prime is 825449497. The reversal of 825449494 is 494944528.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825449497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206362372 + ... + 206362375.

It is an arithmetic number, because the mean of its divisors is an integer number (309543561).

Almost surely, 2^825449494 is an apocalyptic number.

825449494 is a deficient number, since it is larger than the sum of its proper divisors (412724750).

825449494 is a wasteful number, since it uses less digits than its factorization.

825449494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412724749.

The product of its digits is 1658880, while the sum is 49.

The square root of 825449494 is about 28730.6368533661. The cubic root of 825449494 is about 938.0590302350.

The spelling of 825449494 in words is "eight hundred twenty-five million, four hundred forty-nine thousand, four hundred ninety-four".