65205025 has 12 divisors (see below), whose sum is σ = 81025072. Its totient is φ = 52053840.

The previous prime is 65205011. The next prime is 65205029. The reversal of 65205025 is 52050256.

It is a de Polignac number, because none of the positive numbers 2^k-65205025 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65205029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10582 + ... + 15568.

Almost surely, 2^65205025 is an apocalyptic number.

It is an amenable number.

65205025 is a deficient number, since it is larger than the sum of its proper divisors (15820047).

65205025 is a wasteful number, since it uses less digits than its factorization.

65205025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520 (or 5515 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 65205025 is about 8074.9628482117. The cubic root of 65205025 is about 402.4948753897.

The spelling of 65205025 in words is "sixty-five million, two hundred five thousand, twenty-five".