297091225 has 12 divisors (see below), whose sum is σ = 381097260. Its totient is φ = 229476800.

The previous prime is 297091211. The next prime is 297091237. The reversal of 297091225 is 522190792.

It can be written as a sum of positive squares in 6 ways, for example, as 31629376 + 265461849 = 5624^2 + 16293^2 .

It is not a de Polignac number, because 297091225 - 2⁷ = 297091097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204166 + ... + 205615.

It is an arithmetic number, because the mean of its divisors is an integer number (31758105).

Almost surely, 2^297091225 is an apocalyptic number.

297091225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

297091225 is a deficient number, since it is larger than the sum of its proper divisors (84006035).

297091225 is a wasteful number, since it uses less digits than its factorization.

297091225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409820 (or 409815 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 297091225 is about 17236.3344421022. The cubic root of 297091225 is about 667.2623308123.

The spelling of 297091225 in words is "two hundred ninety-seven million, ninety-one thousand, two hundred twenty-five".