1225234872 has 48 divisors (see below), whose sum is σ = 3408036840. Its totient is φ = 397372608.

The previous prime is 1225234853. The next prime is 1225234873. The reversal of 1225234872 is 2784325221.

1225234872 is a `hidden beast` number, since 1 + 22 + 523 + 48 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225234873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227298 + ... + 232625.

Almost surely, 2^1225234872 is an apocalyptic number.

1225234872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225234872 is an abundant number, since it is smaller than the sum of its proper divisors (2182801968).

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

1225234872 is a wasteful number, since it uses less digits than its factorization.

1225234872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459972 (or 459965 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 1225234872 is about 35003.3551534706. The cubic root of 1225234872 is about 1070.0558598956.

The spelling of 1225234872 in words is "one billion, two hundred twenty-five million, two hundred thirty-four thousand, eight hundred seventy-two".