65974725 has 18 divisors (see below), whose sum is σ = 118168466. Its totient is φ = 35186400.

The previous prime is 65974723. The next prime is 65974729. The reversal of 65974725 is 52747956.

It can be written as a sum of positive squares in 3 ways, for example, as 11819844 + 54154881 = 3438^2 + 7359^2 .

It is not a de Polignac number, because 65974725 - 2¹ = 65974723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65974723) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 146386 + ... + 146835.

Almost surely, 2^65974725 is an apocalyptic number.

It is an amenable number.

65974725 is a deficient number, since it is larger than the sum of its proper divisors (52193741).

65974725 is a wasteful number, since it uses less digits than its factorization.

65974725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293237 (or 293229 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 65974725 is about 8122.4826869622. The cubic root of 65974725 is about 404.0724084345.

The spelling of 65974725 in words is "sixty-five million, nine hundred seventy-four thousand, seven hundred twenty-five".