1625645141 has 8 divisors (see below), whose sum is σ = 1686531000. Its totient is φ = 1565081280.

The previous prime is 1625645117. The next prime is 1625645159. The reversal of 1625645141 is 1415465261.

It can be written as a sum of positive squares in 4 ways, for example, as 290838916 + 1334806225 = 17054^2 + 36535^2 .

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

It is not a de Polignac number, because 1625645141 - 2²⁶ = 1558536277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625645101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70190 + ... + 90431.

It is an arithmetic number, because the mean of its divisors is an integer number (210816375).

Almost surely, 2^1625645141 is an apocalyptic number.

It is an amenable number.

1625645141 is a deficient number, since it is larger than the sum of its proper divisors (60885859).

1625645141 is a wasteful number, since it uses less digits than its factorization.

1625645141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160999.

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

The square root of 1625645141 is about 40319.2899367040. The cubic root of 1625645141 is about 1175.8229071126.

The spelling of 1625645141 in words is "one billion, six hundred twenty-five million, six hundred forty-five thousand, one hundred forty-one".