64952225 has 12 divisors (see below), whose sum is σ = 86736636. Its totient is φ = 47964480.

The previous prime is 64952221. The next prime is 64952227. The reversal of 64952225 is 52225946.

It can be written as a sum of positive squares in 6 ways, for example, as 583696 + 64368529 = 764^2 + 8023^2 .

It is not a de Polignac number, because 64952225 - 2² = 64952221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64952221) 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, 99602 + ... + 100251.

It is an arithmetic number, because the mean of its divisors is an integer number (7228053).

Almost surely, 2^64952225 is an apocalyptic number.

64952225 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64952225 is a deficient number, since it is larger than the sum of its proper divisors (21784411).

64952225 is a wasteful number, since it uses less digits than its factorization.

64952225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199876 (or 199871 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 64952225 is about 8059.2943239467. The cubic root of 64952225 is about 401.9740439336.

The spelling of 64952225 in words is "sixty-four million, nine hundred fifty-two thousand, two hundred twenty-five".