1625415803 has 4 divisors (see below), whose sum is σ = 1773180888. Its totient is φ = 1477650720.

The previous prime is 1625415787. The next prime is 1625415853. The reversal of 1625415803 is 3085145261.

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

It is a cyclic number.

It is not a de Polignac number, because 1625415803 - 2⁴ = 1625415787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625415853) 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, 73882526 + ... + 73882547.

It is an arithmetic number, because the mean of its divisors is an integer number (443295222).

Almost surely, 2^1625415803 is an apocalyptic number.

1625415803 is a deficient number, since it is larger than the sum of its proper divisors (147765085).

1625415803 is a wasteful number, since it uses less digits than its factorization.

1625415803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147765084.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 1625415803 is about 40316.4458130922. The cubic root of 1625415803 is about 1175.7676114131.

The spelling of 1625415803 in words is "one billion, six hundred twenty-five million, four hundred fifteen thousand, eight hundred three".