1225233700 has 36 divisors (see below), whose sum is σ = 2662798320. Its totient is φ = 489348640.

The previous prime is 1225233671. The next prime is 1225233703. The reversal of 1225233700 is 73325221.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1225233703) 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, 59331 + ... + 77269.

It is an arithmetic number, because the mean of its divisors is an integer number (73966620).

Almost surely, 2^1225233700 is an apocalyptic number.

1225233700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225233700 is an abundant number, since it is smaller than the sum of its proper divisors (1437564620).

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

1225233700 is a wasteful number, since it uses less digits than its factorization.

1225233700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18636 (or 18629 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 1225233700 is about 35003.3384122143. The cubic root of 1225233700 is about 1070.0555187078.

Adding to 1225233700 its reverse (73325221), we get a palindrome (1298558921).

The spelling of 1225233700 in words is "one billion, two hundred twenty-five million, two hundred thirty-three thousand, seven hundred".