1625926345 has 8 divisors (see below), whose sum is σ = 1951648776. Its totient is φ = 1300382976.

The previous prime is 1625926343. The next prime is 1625926361. The reversal of 1625926345 is 5436295261.

It can be written as a sum of positive squares in 4 ways, for example, as 183142089 + 1442784256 = 13533^2 + 37984^2 .

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 1625926345 - 2¹ = 1625926343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1625926343) 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, 23902 + ... + 61831.

It is an arithmetic number, because the mean of its divisors is an integer number (243956097).

Almost surely, 2^1625926345 is an apocalyptic number.

It is an amenable number.

1625926345 is a deficient number, since it is larger than the sum of its proper divisors (325722431).

1625926345 is an equidigital number, since it uses as much as digits as its factorization.

1625926345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89531.

The product of its digits is 388800, while the sum is 43.

The square root of 1625926345 is about 40322.7770001026. Note that the first 3 decimals coincide. The cubic root of 1625926345 is about 1175.8907011293.

The spelling of 1625926345 in words is "one billion, six hundred twenty-five million, nine hundred twenty-six thousand, three hundred forty-five".