1225254400 has 60 divisors (see below), whose sum is σ = 3035695212. Its totient is φ = 490096640.

The previous prime is 1225254389. The next prime is 1225254409. The reversal of 1225254400 is 44525221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225254409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35062 + ... + 60661.

Almost surely, 2^1225254400 is an apocalyptic number.

1225254400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225254400 is an abundant number, since it is smaller than the sum of its proper divisors (1810440812).

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

1225254400 is an frugal number, since it uses more digits than its factorization.

1225254400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95751 (or 95730 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1225254400 is about 35003.6340970477. The cubic root of 1225254400 is about 1070.0615447757.

Adding to 1225254400 its reverse (44525221), we get a palindrome (1269779621).

The spelling of 1225254400 in words is "one billion, two hundred twenty-five million, two hundred fifty-four thousand, four hundred".