1625605003 has 4 divisors (see below), whose sum is σ = 1773387288. Its totient is φ = 1477822720.

The previous prime is 1625604989. The next prime is 1625605013. The reversal of 1625605003 is 3005065261.

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

It is a de Polignac number, because none of the positive numbers 2^k-1625605003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625605013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73891126 + ... + 73891147.

It is an arithmetic number, because the mean of its divisors is an integer number (443346822).

Almost surely, 2^1625605003 is an apocalyptic number.

1625605003 is a deficient number, since it is larger than the sum of its proper divisors (147782285).

1625605003 is a wasteful number, since it uses less digits than its factorization.

1625605003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147782284.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1625605003 is about 40318.7921818102. The cubic root of 1625605003 is about 1175.8132298124.

The spelling of 1625605003 in words is "one billion, six hundred twenty-five million, six hundred five thousand, three".