1625822916 has 12 divisors (see below), whose sum is σ = 3793586832. Its totient is φ = 541940968.

The previous prime is 1625822903. The next prime is 1625822921. The reversal of 1625822916 is 6192285261.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67742610 + ... + 67742633.

It is an arithmetic number, because the mean of its divisors is an integer number (316132236).

Almost surely, 2^1625822916 is an apocalyptic number.

It is an amenable number.

1625822916 is an abundant number, since it is smaller than the sum of its proper divisors (2167763916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1625822916 is a wasteful number, since it uses less digits than its factorization.

1625822916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135485250 (or 135485248 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 1625822916 is about 40321.4944663513. The cubic root of 1625822916 is about 1175.8657668759.

The spelling of 1625822916 in words is "one billion, six hundred twenty-five million, eight hundred twenty-two thousand, nine hundred sixteen".