212572925 has 6 divisors (see below), whose sum is σ = 263590458. Its totient is φ = 170058320.

The previous prime is 212572901. The next prime is 212572939. The reversal of 212572925 is 529275212.

It can be written as a sum of positive squares in 3 ways, for example, as 60124516 + 152448409 = 7754^2 + 12347^2 .

It is not a de Polignac number, because 212572925 - 2⁸ = 212572669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4251434 + ... + 4251483.

It is an arithmetic number, because the mean of its divisors is an integer number (43931743).

Almost surely, 2^212572925 is an apocalyptic number.

212572925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212572925 is a deficient number, since it is larger than the sum of its proper divisors (51017533).

212572925 is an equidigital number, since it uses as much as digits as its factorization.

212572925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8502927 (or 8502922 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 212572925 is about 14579.8808294170. The cubic root of 212572925 is about 596.8098507147.

The spelling of 212572925 in words is "two hundred twelve million, five hundred seventy-two thousand, nine hundred twenty-five".