654165664425 has 144 divisors (see below), whose sum is σ = 1443440613888. Its totient is φ = 275781542400.

The previous prime is 654165664403. The next prime is 654165664429. The reversal of 654165664425 is 524466561456.

654165664425 is a `hidden beast` number, since 6 + 5 + 4 + 16 + 566 + 44 + 25 = 666.

It is not a de Polignac number, because 654165664425 - 2¹² = 654165660329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (654165664429) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 22364560 + ... + 22393790.

It is an arithmetic number, because the mean of its divisors is an integer number (10023893152).

Almost surely, 2^654165664425 is an apocalyptic number.

654165664425 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

654165664425 is an abundant number, since it is smaller than the sum of its proper divisors (789274949463).

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

654165664425 is a wasteful number, since it uses less digits than its factorization.

654165664425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30360 (or 30352 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 54.

The spelling of 654165664425 in words is "six hundred fifty-four billion, one hundred sixty-five million, six hundred sixty-four thousand, four hundred twenty-five".