207213425 has 12 divisors (see below), whose sum is σ = 272059596. Its totient is φ = 156019200.

The previous prime is 207213421. The next prime is 207213511. The reversal of 207213425 is 524312702.

It can be written as a sum of positive squares in 6 ways, for example, as 2408704 + 204804721 = 1552^2 + 14311^2 .

It is not a de Polignac number, because 207213425 - 2² = 207213421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 207213394 and 207213403.

It is not an unprimeable number, because it can be changed into a prime (207213421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243356 + ... + 244205.

It is an arithmetic number, because the mean of its divisors is an integer number (22671633).

Almost surely, 2^207213425 is an apocalyptic number.

207213425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

207213425 is a deficient number, since it is larger than the sum of its proper divisors (64846171).

207213425 is a wasteful number, since it uses less digits than its factorization.

207213425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487588 (or 487583 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 207213425 is about 14394.9096905816. The cubic root of 207213425 is about 591.7514031473.

The spelling of 207213425 in words is "two hundred seven million, two hundred thirteen thousand, four hundred twenty-five".