315221103225 has 96 divisors (see below), whose sum is σ = 666181806080. Its totient is φ = 143146440000.

The previous prime is 315221103193. The next prime is 315221103259. The reversal of 315221103225 is 522301122513.

315221103225 is a `hidden beast` number, since 3 + 1 + 522 + 110 + 3 + 2 + 25 = 666.

It is not a de Polignac number, because 315221103225 - 2⁵ = 315221103193 is a prime.

It is a super-3 number, since 3×315221103225³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 492570 + ... + 934380.

Almost surely, 2^315221103225 is an apocalyptic number.

315221103225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

315221103225 is an abundant number, since it is smaller than the sum of its proper divisors (350960702855).

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

315221103225 is a wasteful number, since it uses less digits than its factorization.

315221103225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441988 (or 441977 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 315221103225 its reverse (522301122513), we get a palindrome (837522225738).

The spelling of 315221103225 in words is "three hundred fifteen billion, two hundred twenty-one million, one hundred three thousand, two hundred twenty-five".