1625645626 has 16 divisors (see below), whose sum is σ = 2660853888. Its totient is φ = 738733600.

The previous prime is 1625645617. The next prime is 1625645629. The reversal of 1625645626 is 6265465261.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1625645629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104511 + ... + 119053.

It is an arithmetic number, because the mean of its divisors is an integer number (166303368).

Almost surely, 2^1625645626 is an apocalyptic number.

1625645626 is a deficient number, since it is larger than the sum of its proper divisors (1035208262).

1625645626 is a wasteful number, since it uses less digits than its factorization.

1625645626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19637.

The product of its digits is 518400, while the sum is 43.

The square root of 1625645626 is about 40319.2959511944. The cubic root of 1625645626 is about 1175.8230240455.

The spelling of 1625645626 in words is "one billion, six hundred twenty-five million, six hundred forty-five thousand, six hundred twenty-six".