1625127842 has 8 divisors (see below), whose sum is σ = 2625206556. Its totient is φ = 750058992.

The previous prime is 1625127841. The next prime is 1625127851. The reversal of 1625127842 is 2487215261.

It can be written as a sum of positive squares in 2 ways, for example, as 1563332521 + 61795321 = 39539^2 + 7861^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1625127796 and 1625127805.

It is not an unprimeable number, because it can be changed into a prime (1625127841) 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 3 ways as a sum of consecutive naturals, for example, 31252433 + ... + 31252484.

Almost surely, 2^1625127842 is an apocalyptic number.

1625127842 is a deficient number, since it is larger than the sum of its proper divisors (1000078714).

1625127842 is a wasteful number, since it uses less digits than its factorization.

1625127842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62504932.

The product of its digits is 53760, while the sum is 38.

The square root of 1625127842 is about 40312.8743951607. The cubic root of 1625127842 is about 1175.6981737523.

The spelling of 1625127842 in words is "one billion, six hundred twenty-five million, one hundred twenty-seven thousand, eight hundred forty-two".