1225123300 has 36 divisors (see below), whose sum is σ = 2672055540. Its totient is φ = 487553920.

The previous prime is 1225123283. The next prime is 1225123307. The reversal of 1225123300 is 33215221.

It can be written as a sum of positive squares in 6 ways, for example, as 1382976 + 1223740324 = 1176^2 + 34982^2 .

It is not an unprimeable number, because it can be changed into a prime (1225123307) 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, 11395 + ... + 50794.

It is an arithmetic number, because the mean of its divisors is an integer number (74223765).

Almost surely, 2^1225123300 is an apocalyptic number.

1225123300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225123300 is an abundant number, since it is smaller than the sum of its proper divisors (1446932240).

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

1225123300 is a wasteful number, since it uses less digits than its factorization.

1225123300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62400 (or 62393 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1225123300 is about 35001.7613842504. The cubic root of 1225123300 is about 1070.0233785325.

Adding to 1225123300 its reverse (33215221), we get a palindrome (1258338521).

The spelling of 1225123300 in words is "one billion, two hundred twenty-five million, one hundred twenty-three thousand, three hundred".