315222525545 has 8 divisors (see below), whose sum is σ = 378364319880. Its totient is φ = 252113160960.

The previous prime is 315222525493. The next prime is 315222525581. The reversal of 315222525545 is 545525222513.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 68971365376 + 246251160169 = 262624^2 + 496237^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 315222525545 - 2¹⁸ = 315222263401 is a prime.

It is a super-2 number, since 2×315222525545² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 8086046 + ... + 8124935.

It is an arithmetic number, because the mean of its divisors is an integer number (47295539985).

Almost surely, 2^315222525545 is an apocalyptic number.

It is an amenable number.

315222525545 is a deficient number, since it is larger than the sum of its proper divisors (63141794335).

315222525545 is a wasteful number, since it uses less digits than its factorization.

315222525545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16214875.

The product of its digits is 600000, while the sum is 41.

The spelling of 315222525545 in words is "three hundred fifteen billion, two hundred twenty-two million, five hundred twenty-five thousand, five hundred forty-five".