825454509 has 8 divisors (see below), whose sum is σ = 1200661152. Its totient is φ = 500275440.

The previous prime is 825454507. The next prime is 825454523. The reversal of 825454509 is 905454528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 825454509 - 2¹ = 825454507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825454507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12506854 + ... + 12506919.

It is an arithmetic number, because the mean of its divisors is an integer number (150082644).

Almost surely, 2^825454509 is an apocalyptic number.

It is an amenable number.

825454509 is a deficient number, since it is larger than the sum of its proper divisors (375206643).

825454509 is a wasteful number, since it uses less digits than its factorization.

825454509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25013787.

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 825454509 is about 28730.7241294054. The cubic root of 825454509 is about 938.0609299500.

The spelling of 825454509 in words is "eight hundred twenty-five million, four hundred fifty-four thousand, five hundred nine".