1625479865 has 8 divisors (see below), whose sum is σ = 1955104128. Its totient is φ = 1297365040.

The previous prime is 1625479859. The next prime is 1625479879. The reversal of 1625479865 is 5689745261.

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

It is not a de Polignac number, because 1625479865 - 2¹² = 1625475769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374987 + ... + 379296.

It is an arithmetic number, because the mean of its divisors is an integer number (244388016).

Almost surely, 2^1625479865 is an apocalyptic number.

It is an amenable number.

1625479865 is a deficient number, since it is larger than the sum of its proper divisors (329624263).

1625479865 is an equidigital number, since it uses as much as digits as its factorization.

1625479865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754719.

The product of its digits is 3628800, while the sum is 53.

The square root of 1625479865 is about 40317.2402949408. The cubic root of 1625479865 is about 1175.7830579294.

The spelling of 1625479865 in words is "one billion, six hundred twenty-five million, four hundred seventy-nine thousand, eight hundred sixty-five".