654725540 has 48 divisors (see below), whose sum is σ = 1574294400. Its totient is φ = 224055552.

The previous prime is 654725527. The next prime is 654725543. The reversal of 654725540 is 45527456.

It is a junction number, because it is equal to n+sod(n) for n = 654725494 and 654725503.

It is not an unprimeable number, because it can be changed into a prime (654725543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75551 + ... + 83769.

It is an arithmetic number, because the mean of its divisors is an integer number (32797800).

Almost surely, 2^654725540 is an apocalyptic number.

It is an amenable number.

654725540 is an abundant number, since it is smaller than the sum of its proper divisors (919568860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654725540 is a wasteful number, since it uses less digits than its factorization.

654725540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8804 (or 8802 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 38.

The square root of 654725540 is about 25587.6052025194. The cubic root of 654725540 is about 868.3332425422. Note that the first 3 decimals are identical.

The spelling of 654725540 in words is "six hundred fifty-four million, seven hundred twenty-five thousand, five hundred forty".