201451225 has 6 divisors (see below), whose sum is σ = 249799550. Its totient is φ = 161160960.

The previous prime is 201451223. The next prime is 201451231. The reversal of 201451225 is 522154102.

It can be written as a sum of positive squares in 3 ways, for example, as 350464 + 201100761 = 592^2 + 14181^2 .

It is not a de Polignac number, because 201451225 - 2¹ = 201451223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201451196 and 201451205.

It is not an unprimeable number, because it can be changed into a prime (201451223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4029000 + ... + 4029049.

Almost surely, 2^201451225 is an apocalyptic number.

201451225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201451225 is a deficient number, since it is larger than the sum of its proper divisors (48348325).

201451225 is an equidigital number, since it uses as much as digits as its factorization.

201451225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8058059 (or 8058054 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 201451225 is about 14193.3514365001. The cubic root of 201451225 is about 586.2146093932.

The spelling of 201451225 in words is "two hundred one million, four hundred fifty-one thousand, two hundred twenty-five".