64361725 has 6 divisors (see below), whose sum is σ = 79808570. Its totient is φ = 51489360.

The previous prime is 64361723. The next prime is 64361729. The reversal of 64361725 is 52716346.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2566404 + 61795321 = 1602^2 + 7861^2 .

It is not a de Polignac number, because 64361725 - 2¹ = 64361723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64361723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1287210 + ... + 1287259.

Almost surely, 2^64361725 is an apocalyptic number.

It is an amenable number.

64361725 is a deficient number, since it is larger than the sum of its proper divisors (15446845).

64361725 is a wasteful number, since it uses less digits than its factorization.

64361725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574479 (or 2574474 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 64361725 is about 8022.5759578829. The cubic root of 64361725 is about 400.7521784324.

The spelling of 64361725 in words is "sixty-four million, three hundred sixty-one thousand, seven hundred twenty-five".