65125553 has 4 divisors (see below), whose sum is σ = 65601060. Its totient is φ = 64650048.

The previous prime is 65125523. The next prime is 65125573. The reversal of 65125553 is 35552156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54582544 + 10543009 = 7388^2 + 3247^2 .

It is a cyclic number.

It is not a de Polignac number, because 65125553 - 2¹² = 65121457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65125523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237548 + ... + 237821.

It is an arithmetic number, because the mean of its divisors is an integer number (16400265).

Almost surely, 2^65125553 is an apocalyptic number.

It is an amenable number.

65125553 is a deficient number, since it is larger than the sum of its proper divisors (475507).

65125553 is a wasteful number, since it uses less digits than its factorization.

65125553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475506.

The product of its digits is 22500, while the sum is 32.

The square root of 65125553 is about 8070.0404583868. The cubic root of 65125553 is about 402.3312884225.

The spelling of 65125553 in words is "sixty-five million, one hundred twenty-five thousand, five hundred fifty-three".