212276925 has 72 divisors (see below), whose sum is σ = 442900224. Its totient is φ = 95172480.

The previous prime is 212276921. The next prime is 212276983. The reversal of 212276925 is 529672212.

It is a happy number.

It is not a de Polignac number, because 212276925 - 2² = 212276921 is a prime.

It is a super-2 number, since 2×212276925² = 90122985774911250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212276925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212276921) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 82204 + ... + 84746.

It is an arithmetic number, because the mean of its divisors is an integer number (6151392).

Almost surely, 2^212276925 is an apocalyptic number.

212276925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212276925 is an abundant number, since it is smaller than the sum of its proper divisors (230623299).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212276925 is a wasteful number, since it uses less digits than its factorization.

212276925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619 (or 2611 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 212276925 is about 14569.7263186376. The cubic root of 212276925 is about 596.5327100976.

The spelling of 212276925 in words is "two hundred twelve million, two hundred seventy-six thousand, nine hundred twenty-five".