213315625 has 12 divisors (see below), whose sum is σ = 266631372. Its totient is φ = 170650000.

The previous prime is 213315617. The next prime is 213315631. The reversal of 213315625 is 526513312.

213315625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 211615209 + 1700416 = 14547^2 + 1304^2 .

It is not a de Polignac number, because 213315625 - 2³ = 213315617 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213315593 and 213315602.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31006 + ... + 37255.

It is an arithmetic number, because the mean of its divisors is an integer number (22219281).

Almost surely, 2^213315625 is an apocalyptic number.

213315625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213315625 is a deficient number, since it is larger than the sum of its proper divisors (53315747).

213315625 is an frugal number, since it uses more digits than its factorization.

213315625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68286 (or 68266 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 213315625 is about 14605.3286508726. The cubic root of 213315625 is about 597.5040994566.

Adding to 213315625 its reverse (526513312), we get a palindrome (739828937).

The spelling of 213315625 in words is "two hundred thirteen million, three hundred fifteen thousand, six hundred twenty-five".