1625385541 has 8 divisors (see below), whose sum is σ = 1754920440. Its totient is φ = 1496494272.

The previous prime is 1625385527. The next prime is 1625385569. The reversal of 1625385541 is 1455835261.

It can be written as a sum of positive squares in 4 ways, for example, as 133494916 + 1491890625 = 11554^2 + 38625^2 .

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

It is not a de Polignac number, because 1625385541 - 2⁹ = 1625385029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1625385494 and 1625385503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625385581) 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, 155650 + ... + 165763.

It is an arithmetic number, because the mean of its divisors is an integer number (219365055).

Almost surely, 2^1625385541 is an apocalyptic number.

It is an amenable number.

1625385541 is a deficient number, since it is larger than the sum of its proper divisors (129534899).

1625385541 is a wasteful number, since it uses less digits than its factorization.

1625385541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321815.

The product of its digits is 144000, while the sum is 40.

The square root of 1625385541 is about 40316.0705054448. The cubic root of 1625385541 is about 1175.7603145519.

The spelling of 1625385541 in words is "one billion, six hundred twenty-five million, three hundred eighty-five thousand, five hundred forty-one".