65403625 has 16 divisors (see below), whose sum is σ = 93285504. Its totient is φ = 44847600.

The previous prime is 65403623. The next prime is 65403659. The reversal of 65403625 is 52630456.

It is not a de Polignac number, because 65403625 - 2¹ = 65403623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65403623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36499 + ... + 38248.

It is an arithmetic number, because the mean of its divisors is an integer number (5830344).

Almost surely, 2^65403625 is an apocalyptic number.

It is an amenable number.

65403625 is a deficient number, since it is larger than the sum of its proper divisors (27881879).

65403625 is an equidigital number, since it uses as much as digits as its factorization.

65403625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74769 (or 74759 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 65403625 is about 8087.2507689573. The cubic root of 65403625 is about 402.9030978340.

The spelling of 65403625 in words is "sixty-five million, four hundred three thousand, six hundred twenty-five".