654243025 has 12 divisors (see below), whose sum is σ = 811685772. Its totient is φ = 523120640.

The previous prime is 654243013. The next prime is 654243049. The reversal of 654243025 is 520342456.

It can be written as a sum of positive squares in 6 ways, for example, as 571536 + 653671489 = 756^2 + 25567^2 .

It is a de Polignac number, because none of the positive numbers 2^k-654243025 is a prime.

It is a super-2 number, since 2×654243025² = 856067871522301250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51729 + ... + 63121.

It is an arithmetic number, because the mean of its divisors is an integer number (67640481).

Almost surely, 2^654243025 is an apocalyptic number.

It is an amenable number.

654243025 is a deficient number, since it is larger than the sum of its proper divisors (157442747).

654243025 is a wasteful number, since it uses less digits than its factorization.

654243025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13700 (or 13695 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 654243025 is about 25578.1747785099. The cubic root of 654243025 is about 868.1198774206.

The spelling of 654243025 in words is "six hundred fifty-four million, two hundred forty-three thousand, twenty-five".