654225409 has 12 divisors (see below), whose sum is σ = 690604096. Its totient is φ = 619653672.

The previous prime is 654225391. The next prime is 654225443. The reversal of 654225409 is 904522456.

It is not a de Polignac number, because 654225409 - 2⁷ = 654225281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654225809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48484 + ... + 60490.

Almost surely, 2^654225409 is an apocalyptic number.

It is an amenable number.

654225409 is a deficient number, since it is larger than the sum of its proper divisors (36378687).

654225409 is a wasteful number, since it uses less digits than its factorization.

654225409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12156 (or 12133 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 654225409 is about 25577.8304201119. The cubic root of 654225409 is about 868.1120857507.

The spelling of 654225409 in words is "six hundred fifty-four million, two hundred twenty-five thousand, four hundred nine".