61143425 has 72 divisors (see below), whose sum is σ = 96690240. Its totient is φ = 38102400.

The previous prime is 61143421. The next prime is 61143427. The reversal of 61143425 is 52434116.

61143425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61143425 - 2² = 61143421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61143394 and 61143403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61143421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 861140 + ... + 861210.

It is an arithmetic number, because the mean of its divisors is an integer number (1342920).

Almost surely, 2^61143425 is an apocalyptic number.

It is an amenable number.

61143425 is a deficient number, since it is larger than the sum of its proper divisors (35546815).

61143425 is a wasteful number, since it uses less digits than its factorization.

61143425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 139 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 61143425 is about 7819.4261298384. The cubic root of 61143425 is about 393.9579971028.

The spelling of 61143425 in words is "sixty-one million, one hundred forty-three thousand, four hundred twenty-five".