65425515 has 16 divisors (see below), whose sum is σ = 104781600. Its totient is φ = 34860032.

The previous prime is 65425499. The next prime is 65425541. The reversal of 65425515 is 51552456.

It is a cyclic number.

It is not a de Polignac number, because 65425515 - 2⁴ = 65425499 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27181 + ... + 29489.

It is an arithmetic number, because the mean of its divisors is an integer number (6548850).

Almost surely, 2^65425515 is an apocalyptic number.

65425515 is a deficient number, since it is larger than the sum of its proper divisors (39356085).

65425515 is a wasteful number, since it uses less digits than its factorization.

65425515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206.

The product of its digits is 30000, while the sum is 33.

The square root of 65425515 is about 8088.6040204723. The cubic root of 65425515 is about 402.9480421576.

The spelling of 65425515 in words is "sixty-five million, four hundred twenty-five thousand, five hundred fifteen".