6155625442 has 4 divisors (see below), whose sum is σ = 9233438166. Its totient is φ = 3077812720.

The previous prime is 6155625439. The next prime is 6155625457. The reversal of 6155625442 is 2445265516.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5444816521 + 710808921 = 73789^2 + 26661^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 6155625395 and 6155625404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1538906359 + ... + 1538906362.

Almost surely, 2^6155625442 is an apocalyptic number.

6155625442 is a deficient number, since it is larger than the sum of its proper divisors (3077812724).

6155625442 is a wasteful number, since it uses less digits than its factorization.

6155625442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077812723.

The product of its digits is 288000, while the sum is 40.

The square root of 6155625442 is about 78457.7940169108. The cubic root of 6155625442 is about 1832.6972520034.

The spelling of 6155625442 in words is "six billion, one hundred fifty-five million, six hundred twenty-five thousand, four hundred forty-two".