1225474402420 has 24 divisors (see below), whose sum is σ = 2573759178144. Its totient is φ = 490139678496.

The previous prime is 1225474402409. The next prime is 1225474402423. The reversal of 1225474402420 is 242044745221.

It is a super-2 number, since 2×1225474402420² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1225474402420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225474402423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2929194 + ... + 3321313.

It is an arithmetic number, because the mean of its divisors is an integer number (107239965756).

Almost surely, 2^{1225474402420} is an apocalyptic number.

1225474402420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225474402420 is an abundant number, since it is smaller than the sum of its proper divisors (1348284775724).

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

1225474402420 is a wasteful number, since it uses less digits than its factorization.

1225474402420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6260319 (or 6260317 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 37.

The spelling of 1225474402420 in words is "one trillion, two hundred twenty-five billion, four hundred seventy-four million, four hundred two thousand, four hundred twenty".