1225000222400 has 84 divisors (see below), whose sum is σ = 3014495640288. Its totient is φ = 489962787840.

The previous prime is 1225000222367. The next prime is 1225000222463. The reversal of 1225000222400 is 42220005221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31976057 + ... + 32014343.

Almost surely, 2^{1225000222400} is an apocalyptic number.

1225000222400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225000222400 is an abundant number, since it is smaller than the sum of its proper divisors (1789495417888).

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

1225000222400 is a wasteful number, since it uses less digits than its factorization.

1225000222400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58306 (or 58291 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 1225000222400 its reverse (42220005221), we get a palindrome (1267220227621).

The spelling of 1225000222400 in words is "one trillion, two hundred twenty-five billion, two hundred twenty-two thousand, four hundred".