1225155463215 has 32 divisors (see below), whose sum is σ = 2063494206720. Its totient is φ = 619003574784.

The previous prime is 1225155463199. The next prime is 1225155463271. The reversal of 1225155463215 is 5123645515221.

It is a happy number.

It is not a de Polignac number, because 1225155463215 - 2⁴ = 1225155463199 is a prime.

It is a super-2 number, since 2×1225155463215² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10230967 + ... + 10350023.

It is an arithmetic number, because the mean of its divisors is an integer number (64484193960).

Almost surely, 2^{1225155463215} is an apocalyptic number.

1225155463215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225155463215 is a deficient number, since it is larger than the sum of its proper divisors (838338743505).

1225155463215 is a wasteful number, since it uses less digits than its factorization.

1225155463215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155191.

The product of its digits is 360000, while the sum is 42.

The spelling of 1225155463215 in words is "one trillion, two hundred twenty-five billion, one hundred fifty-five million, four hundred sixty-three thousand, two hundred fifteen".