61825145 has 16 divisors (see below), whose sum is σ = 78291840. Its totient is φ = 46738944.

The previous prime is 61825139. The next prime is 61825151. The reversal of 61825145 is 54152816.

It is an interprime number because it is at equal distance from previous prime (61825139) and next prime (61825151).

It is a cyclic number.

It is not a de Polignac number, because 61825145 - 2²² = 57630841 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63452 + ... + 64418.

It is an arithmetic number, because the mean of its divisors is an integer number (4893240).

Almost surely, 2^61825145 is an apocalyptic number.

It is an amenable number.

61825145 is a deficient number, since it is larger than the sum of its proper divisors (16466695).

61825145 is a wasteful number, since it uses less digits than its factorization.

61825145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664.

The product of its digits is 9600, while the sum is 32.

The square root of 61825145 is about 7862.8967308493. The cubic root of 61825145 is about 395.4167369099.

The spelling of 61825145 in words is "sixty-one million, eight hundred twenty-five thousand, one hundred forty-five".