1625448345 has 16 divisors (see below), whose sum is σ = 2632053312. Its totient is φ = 856460480.

The previous prime is 1625448337. The next prime is 1625448367. The reversal of 1625448345 is 5438445261.

It is not a de Polignac number, because 1625448345 - 2³ = 1625448337 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1625448297 and 1625448306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651546 + ... + 654035.

It is an arithmetic number, because the mean of its divisors is an integer number (164503332).

Almost surely, 2^1625448345 is an apocalyptic number.

1625448345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1625448345 is a deficient number, since it is larger than the sum of its proper divisors (1006604967).

1625448345 is a wasteful number, since it uses less digits than its factorization.

1625448345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305672.

The product of its digits is 460800, while the sum is 42.

The square root of 1625448345 is about 40316.8493932748. The cubic root of 1625448345 is about 1175.7754579334.

The spelling of 1625448345 in words is "one billion, six hundred twenty-five million, four hundred forty-eight thousand, three hundred forty-five".