1225115412 has 48 divisors (see below), whose sum is σ = 3000883200. Its totient is φ = 388493280.

The previous prime is 1225115389. The next prime is 1225115417. The reversal of 1225115412 is 2145115221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225115417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5962 + ... + 49857.

It is an arithmetic number, because the mean of its divisors is an integer number (62518400).

Almost surely, 2^1225115412 is an apocalyptic number.

1225115412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225115412 is an abundant number, since it is smaller than the sum of its proper divisors (1775767788).

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

1225115412 is a wasteful number, since it uses less digits than its factorization.

1225115412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55916 (or 55914 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 1225115412 is about 35001.6487040254. The cubic root of 1225115412 is about 1070.0210820664.

The spelling of 1225115412 in words is "one billion, two hundred twenty-five million, one hundred fifteen thousand, four hundred twelve".