1225165700 has 36 divisors (see below), whose sum is σ = 2900303952. Its totient is φ = 445514400.

The previous prime is 1225165693. The next prime is 1225165709. The reversal of 1225165700 is 75615221.

It is not an unprimeable number, because it can be changed into a prime (1225165709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 555794 + ... + 557993.

Almost surely, 2^1225165700 is an apocalyptic number.

1225165700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225165700 is an abundant number, since it is smaller than the sum of its proper divisors (1675138252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225165700 is a wasteful number, since it uses less digits than its factorization.

1225165700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113812 (or 1113805 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1225165700 is about 35002.3670628145. The cubic root of 1225165700 is about 1070.0357224514.

The spelling of 1225165700 in words is "one billion, two hundred twenty-five million, one hundred sixty-five thousand, seven hundred".