316925087521 has 15 divisors (see below), whose sum is σ = 369756119411. Its totient is φ = 271626430656.

The previous prime is 316925087509. The next prime is 316925087561. The reversal of 316925087521 is 125780529613.

The square root of 316925087521 is 562961.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 71028113121 + 245896974400 = 266511^2 + 495880^2 .

It is not a de Polignac number, because 316925087521 - 2¹¹ = 316925085473 is a prime.

It is a super-2 number, since 2×316925087521² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (316925087561) by changing a digit.

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 14 ways as a sum of consecutive naturals, for example, 27579345 + ... + 27590833.

Almost surely, 2^316925087521 is an apocalyptic number.

316925087521 is the 562961-st square number.

316925087521 is the 281481-st centered octagonal number.

It is an amenable number.

316925087521 is a deficient number, since it is larger than the sum of its proper divisors (52831031890).

316925087521 is an frugal number, since it uses more digits than its factorization.

316925087521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23006 (or 11496 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

Multiplying 316925087521 by its sum of digits (49), we get a square (15529329288529 = 3940727²).

316925087521 divided by its sum of digits (49) gives a square (6467858929 = 80423²).

The spelling of 316925087521 in words is "three hundred sixteen billion, nine hundred twenty-five million, eighty-seven thousand, five hundred twenty-one".