1225727249 has 8 divisors (see below), whose sum is σ = 1234920960. Its totient is φ = 1216548000.

The previous prime is 1225727233. The next prime is 1225727273. The reversal of 1225727249 is 9427275221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1225727249 - 2⁴ = 1225727233 is a prime.

It is a super-2 number, since 2×1225727249² = 3004814577882216002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225724249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214469 + ... + 220109.

It is an arithmetic number, because the mean of its divisors is an integer number (154365120).

Almost surely, 2^1225727249 is an apocalyptic number.

It is an amenable number.

1225727249 is a deficient number, since it is larger than the sum of its proper divisors (9193711).

1225727249 is a wasteful number, since it uses less digits than its factorization.

1225727249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7231.

The product of its digits is 141120, while the sum is 41.

The square root of 1225727249 is about 35010.3877299295. The cubic root of 1225727249 is about 1070.1991794461.

The spelling of 1225727249 in words is "one billion, two hundred twenty-five million, seven hundred twenty-seven thousand, two hundred forty-nine".