212551925 has 12 divisors (see below), whose sum is σ = 268033440. Its totient is φ = 167158320.

The previous prime is 212551909. The next prime is 212551931. The reversal of 212551925 is 529155212.

It is not a de Polignac number, because 212551925 - 2⁴ = 212551909 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 212551891 and 212551900.

It is a congruent number.

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, 70577 + ... + 73526.

It is an arithmetic number, because the mean of its divisors is an integer number (22336120).

Almost surely, 2^212551925 is an apocalyptic number.

212551925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212551925 is a deficient number, since it is larger than the sum of its proper divisors (55481515).

212551925 is a wasteful number, since it uses less digits than its factorization.

212551925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144172 (or 144167 counting only the distinct ones).

The product of its digits is 9000, while the sum is 32.

The square root of 212551925 is about 14579.1606411343. The cubic root of 212551925 is about 596.7901971933.

The spelling of 212551925 in words is "two hundred twelve million, five hundred fifty-one thousand, nine hundred twenty-five".