61829725 has 6 divisors (see below), whose sum is σ = 76668890. Its totient is φ = 49463760.

The previous prime is 61829723. The next prime is 61829737. The reversal of 61829725 is 52792816.

It can be written as a sum of positive squares in 3 ways, for example, as 10478169 + 51351556 = 3237^2 + 7166^2 .

It is not a de Polignac number, because 61829725 - 2¹ = 61829723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61829723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1236570 + ... + 1236619.

Almost surely, 2^61829725 is an apocalyptic number.

It is an amenable number.

61829725 is a deficient number, since it is larger than the sum of its proper divisors (14839165).

61829725 is a wasteful number, since it uses less digits than its factorization.

61829725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473199 (or 2473194 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 61829725 is about 7863.1879667219. The cubic root of 61829725 is about 395.4265008117.

The spelling of 61829725 in words is "sixty-one million, eight hundred twenty-nine thousand, seven hundred twenty-five".