65161725 has 24 divisors (see below), whose sum is σ = 109507872. Its totient is φ = 34180800.

The previous prime is 65161717. The next prime is 65161729. The reversal of 65161725 is 52716156.

It is not a de Polignac number, because 65161725 - 2³ = 65161717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65161729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2547 + ... + 11696.

It is an arithmetic number, because the mean of its divisors is an integer number (4562828).

Almost surely, 2^65161725 is an apocalyptic number.

It is an amenable number.

65161725 is a deficient number, since it is larger than the sum of its proper divisors (44346147).

65161725 is a wasteful number, since it uses less digits than its factorization.

65161725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14317 (or 14312 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 65161725 is about 8072.2812760706. The cubic root of 65161725 is about 402.4057621796.

The spelling of 65161725 in words is "sixty-five million, one hundred sixty-one thousand, seven hundred twenty-five".