1225161760 has 48 divisors (see below), whose sum is σ = 2972687256. Its totient is φ = 476817408.

The previous prime is 1225161739. The next prime is 1225161767. The reversal of 1225161760 is 671615221.

It can be written as a sum of positive squares in 4 ways, for example, as 897841296 + 327320464 = 29964^2 + 18092^2 .

It is a super-3 number, since 3×1225161760³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225161767) 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 7 ways as a sum of consecutive naturals, for example, 97557 + ... + 109396.

Almost surely, 2^1225161760 is an apocalyptic number.

1225161760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225161760 is an abundant number, since it is smaller than the sum of its proper divisors (1747525496).

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

1225161760 is a wasteful number, since it uses less digits than its factorization.

1225161760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207005 (or 206997 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1225161760 is about 35002.3107808613. The cubic root of 1225161760 is about 1070.0345754105.

Adding to 1225161760 its reverse (671615221), we get a palindrome (1896776981).

The spelling of 1225161760 in words is "one billion, two hundred twenty-five million, one hundred sixty-one thousand, seven hundred sixty".