1225240512 has 28 divisors (see below), whose sum is σ = 3241782696. Its totient is φ = 408413440.

The previous prime is 1225240487. The next prime is 1225240529. The reversal of 1225240512 is 2150425221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3190539 + ... + 3190922.

Almost surely, 2^1225240512 is an apocalyptic number.

1225240512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225240512 is an abundant number, since it is smaller than the sum of its proper divisors (2016542184).

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

1225240512 is an equidigital number, since it uses as much as digits as its factorization.

1225240512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381476 (or 6381466 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1225240512 is about 35003.4357170835. The cubic root of 1225240512 is about 1070.0575017865.

Adding to 1225240512 its reverse (2150425221), we get a palindrome (3375665733).

The spelling of 1225240512 in words is "one billion, two hundred twenty-five million, two hundred forty thousand, five hundred twelve".