212751225 has 48 divisors (see below), whose sum is σ = 397315840. Its totient is φ = 111585600.

The previous prime is 212751223. The next prime is 212751241. The reversal of 212751225 is 522157212.

212751225 is a `hidden beast` number, since 2 + 127 + 512 + 25 = 666.

It is not a de Polignac number, because 212751225 - 2¹ = 212751223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (212751223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38592 + ... + 43758.

Almost surely, 2^212751225 is an apocalyptic number.

212751225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212751225 is a deficient number, since it is larger than the sum of its proper divisors (184564615).

212751225 is a wasteful number, since it uses less digits than its factorization.

212751225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5247 (or 5236 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 212751225 is about 14585.9941382135. The cubic root of 212751225 is about 596.9766663439.

It can be divided in two parts, 21275 and 1225, that added together give a square (22500 = 150²).

The spelling of 212751225 in words is "two hundred twelve million, seven hundred fifty-one thousand, two hundred twenty-five".