1225401223040 has 64 divisors (see below), whose sum is σ = 2977499070720. Its totient is φ = 482125056000.

The previous prime is 1225401222959. The next prime is 1225401223091. The reversal of 1225401223040 is 403221045221.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15655136 + ... + 15733215.

It is an arithmetic number, because the mean of its divisors is an integer number (46523422980).

Almost surely, 2^{1225401223040} is an apocalyptic number.

1225401223040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225401223040 is an abundant number, since it is smaller than the sum of its proper divisors (1752097847680).

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

1225401223040 is an equidigital number, since it uses as much as digits as its factorization.

1225401223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31388431 (or 31388419 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 1225401223040 its reverse (403221045221), we get a palindrome (1628622268261).

It can be divided in two parts, 1225401 and 223040, that added together give a palindrome (1448441).

The spelling of 1225401223040 in words is "one trillion, two hundred twenty-five billion, four hundred one million, two hundred twenty-three thousand, forty".