1016665250 has 16 divisors (see below), whose sum is σ = 1903197816. Its totient is φ = 406666000.

The previous prime is 1016665249. The next prime is 1016665253. The reversal of 1016665250 is 525666101.

It can be written as a sum of positive squares in 4 ways, for example, as 472236361 + 544428889 = 21731^2 + 23333^2 .

It is not an unprimeable number, because it can be changed into a prime (1016665253) 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, 2033081 + ... + 2033580.

Almost surely, 2^1016665250 is an apocalyptic number.

1016665250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1016665250 is a deficient number, since it is larger than the sum of its proper divisors (886532566).

1016665250 is an equidigital number, since it uses as much as digits as its factorization.

1016665250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066678 (or 4066668 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1016665250 is about 31885.1885677347. The cubic root of 1016665250 is about 1005.5245069533.

The spelling of 1016665250 in words is "one billion, sixteen million, six hundred sixty-five thousand, two hundred fifty".