65625015 has 16 divisors (see below), whose sum is σ = 111176928. Its totient is φ = 32941056.

The previous prime is 65624953. The next prime is 65625017. The reversal of 65625015 is 51052656.

It is not a de Polignac number, because 65625015 - 2¹⁶ = 65559479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65625017) 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, 128422 + ... + 128931.

It is an arithmetic number, because the mean of its divisors is an integer number (6948558).

Almost surely, 2^65625015 is an apocalyptic number.

65625015 is a deficient number, since it is larger than the sum of its proper divisors (45551913).

65625015 is a wasteful number, since it uses less digits than its factorization.

65625015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257378.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 65625015 is about 8100.9267988299. The cubic root of 65625015 is about 403.3571922381.

The spelling of 65625015 in words is "sixty-five million, six hundred twenty-five thousand, fifteen".