1625134465 has 8 divisors (see below), whose sum is σ = 2064876840. Its totient is φ = 1223630592.

The previous prime is 1625134447. The next prime is 1625134477. The reversal of 1625134465 is 5644315261.

It can be written as a sum of positive squares in 4 ways, for example, as 381655296 + 1243479169 = 19536^2 + 35263^2 .

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 1625134465 - 2¹⁵ = 1625101697 is a prime.

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, 9559530 + ... + 9559699.

It is an arithmetic number, because the mean of its divisors is an integer number (258109605).

Almost surely, 2^1625134465 is an apocalyptic number.

It is an amenable number.

1625134465 is a deficient number, since it is larger than the sum of its proper divisors (439742375).

1625134465 is a wasteful number, since it uses less digits than its factorization.

1625134465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19119251.

The product of its digits is 86400, while the sum is 37.

The square root of 1625134465 is about 40312.9565400505. The cubic root of 1625134465 is about 1175.6997708859.

The spelling of 1625134465 in words is "one billion, six hundred twenty-five million, one hundred thirty-four thousand, four hundred sixty-five".