416665625 has 24 divisors (see below), whose sum is σ = 524841408. Its totient is φ = 330750000.

The previous prime is 416665609. The next prime is 416665643. The reversal of 416665625 is 526566614.

It is not a de Polignac number, because 416665625 - 2⁴ = 416665609 is a prime.

It is a super-2 number, since 2×416665625² = 347220486113281250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 471434 + ... + 472316.

It is an arithmetic number, because the mean of its divisors is an integer number (21868392).

Almost surely, 2^416665625 is an apocalyptic number.

It is an amenable number.

416665625 is a deficient number, since it is larger than the sum of its proper divisors (108175783).

416665625 is an frugal number, since it uses more digits than its factorization.

416665625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059 (or 1039 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 416665625 is about 20412.3890076590. The cubic root of 416665625 is about 746.9001686750.

It can be divided in two parts, 41 and 6665625, that added together give a palindrome (6665666).

The spelling of 416665625 in words is "four hundred sixteen million, six hundred sixty-five thousand, six hundred twenty-five".