1266604250 has 32 divisors (see below), whose sum is σ = 2474184960. Its totient is φ = 484611600.

The previous prime is 1266604243. The next prime is 1266604289. The reversal of 1266604250 is 524066621.

It is a super-2 number, since 2×1266604250² = 3208572652236125000, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 104390 + ... + 115889.

It is an arithmetic number, because the mean of its divisors is an integer number (77318280).

Almost surely, 2^1266604250 is an apocalyptic number.

1266604250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266604250 is a deficient number, since it is larger than the sum of its proper divisors (1207580710).

1266604250 is a wasteful number, since it uses less digits than its factorization.

1266604250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220319 (or 220309 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1266604250 is about 35589.3839508357. The cubic root of 1266604250 is about 1081.9660831719.

The spelling of 1266604250 in words is "one billion, two hundred sixty-six million, six hundred four thousand, two hundred fifty".