1625163623 has 8 divisors (see below), whose sum is σ = 1688702976. Its totient is φ = 1562319000.

The previous prime is 1625163607. The next prime is 1625163643. The reversal of 1625163623 is 3263615261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1625163623 - 2⁴ = 1625163607 is a prime.

It is a super-2 number, since 2×1625163623² = 5282313603044972258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625163643) 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, 168911 + ... + 178272.

It is an arithmetic number, because the mean of its divisors is an integer number (211087872).

Almost surely, 2^1625163623 is an apocalyptic number.

1625163623 is a deficient number, since it is larger than the sum of its proper divisors (63539353).

1625163623 is a wasteful number, since it uses less digits than its factorization.

1625163623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347365.

The product of its digits is 38880, while the sum is 35.

The square root of 1625163623 is about 40313.3181839451. The cubic root of 1625163623 is about 1175.7068022730.

Adding to 1625163623 its reverse (3263615261), we get a palindrome (4888778884).

The spelling of 1625163623 in words is "one billion, six hundred twenty-five million, one hundred sixty-three thousand, six hundred twenty-three".