1225216520115 has 16 divisors (see below), whose sum is σ = 2240395922688. Its totient is φ = 560098980576.

The previous prime is 1225216520107. The next prime is 1225216520117. The reversal of 1225216520115 is 5110256125221.

It is not a de Polignac number, because 1225216520115 - 2³ = 1225216520107 is a prime.

It is a super-2 number, since 2×1225216520115² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225216520117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5834364277 + ... + 5834364486.

It is an arithmetic number, because the mean of its divisors is an integer number (140024745168).

Almost surely, 2^{1225216520115} is an apocalyptic number.

1225216520115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225216520115 is a deficient number, since it is larger than the sum of its proper divisors (1015179402573).

1225216520115 is a wasteful number, since it uses less digits than its factorization.

1225216520115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11668728778.

The product of its (nonzero) digits is 12000, while the sum is 33.

The spelling of 1225216520115 in words is "one trillion, two hundred twenty-five billion, two hundred sixteen million, five hundred twenty thousand, one hundred fifteen".