65887225 has 6 divisors (see below), whose sum is σ = 81700190. Its totient is φ = 52709760.

The previous prime is 65887147. The next prime is 65887243. The reversal of 65887225 is 52278856.

It can be written as a sum of positive squares in 3 ways, for example, as 10949481 + 54937744 = 3309^2 + 7412^2 .

It is not a de Polignac number, because 65887225 - 2²¹ = 63790073 is a prime.

It is a super-2 number, since 2×65887225² = 8682252836401250, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1317720 + ... + 1317769.

Almost surely, 2^65887225 is an apocalyptic number.

It is an amenable number.

65887225 is a deficient number, since it is larger than the sum of its proper divisors (15812965).

65887225 is a wasteful number, since it uses less digits than its factorization.

65887225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635499 (or 2635494 counting only the distinct ones).

The product of its digits is 268800, while the sum is 43.

The square root of 65887225 is about 8117.0946156861. The cubic root of 65887225 is about 403.8936936418.

The spelling of 65887225 in words is "sixty-five million, eight hundred eighty-seven thousand, two hundred twenty-five".