308541366225 has 81 divisors (see below), whose sum is σ = 583548002193. Its totient is φ = 155814598080.

The previous prime is 308541366169. The next prime is 308541366239. The reversal of 308541366225 is 522663145803.

The square root of 308541366225 is 555465.

It is a perfect power (a square), and thus also a powerful number.

308541366225 is a `hidden beast` number, since 3 + 0 + 8 + 5 + 4 + 13 + 6 + 622 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10608794001 + 297932572224 = 102999^2 + 545832^2 .

It is not a de Polignac number, because 308541366225 - 2⁷ = 308541366097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 158306551 + ... + 158308499.

Almost surely, 2^308541366225 is an apocalyptic number.

308541366225 is the 555465-th square number.

308541366225 is the 277733-rd centered octagonal number.

It is an amenable number.

308541366225 is a deficient number, since it is larger than the sum of its proper divisors (275006635968).

308541366225 is an equidigital number, since it uses as much as digits as its factorization.

308541366225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952 (or 1976 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 308541366225 in words is "three hundred eight billion, five hundred forty-one million, three hundred sixty-six thousand, two hundred twenty-five".