61155425 has 12 divisors (see below), whose sum is σ = 76320636. Its totient is φ = 48609600.

The previous prime is 61155383. The next prime is 61155491. The reversal of 61155425 is 52455116.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 7118224 + 54037201 = 2668^2 + 7351^2 .

It is not a de Polignac number, because 61155425 - 2¹⁸ = 60893281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3866 + ... + 11715.

It is an arithmetic number, because the mean of its divisors is an integer number (6360053).

Almost surely, 2^61155425 is an apocalyptic number.

It is an amenable number.

61155425 is a deficient number, since it is larger than the sum of its proper divisors (15165211).

61155425 is a wasteful number, since it uses less digits than its factorization.

61155425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15748 (or 15743 counting only the distinct ones).

The product of its digits is 6000, while the sum is 29.

The square root of 61155425 is about 7820.1934119304. The cubic root of 61155425 is about 393.9837681306.

The spelling of 61155425 in words is "sixty-one million, one hundred fifty-five thousand, four hundred twenty-five".