1225400000000 has 360 divisors, whose sum is σ = 3344728756248. Its totient is φ = 444800000000.

The previous prime is 1225399999991. The next prime is 1225400000009. The reversal of 1225400000000 is 45221.

It is an interprime number because it is at equal distance from previous prime (1225399999991) and next prime (1225400000009).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225400000009) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2199999722 + ... + 2200000278.

Almost surely, 2^{1225400000000} is an apocalyptic number.

1225400000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225400000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672364378124).

1225400000000 is an abundant number, since it is smaller than the sum of its proper divisors (2119328756248).

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

1225400000000 is an frugal number, since it uses more digits than its factorization.

1225400000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

Adding to 1225400000000 its reverse (45221), we get a palindrome (1225400045221).

It can be divided in two parts, 1225 and 400000000, that multiplied together give a square (490000000000 = 700000²).

The spelling of 1225400000000 in words is "one trillion, two hundred twenty-five billion, four hundred million", and thus it is an aban number.