1625136007665 has 48 divisors (see below), whose sum is σ = 2765531173248. Its totient is φ = 814761560064.

The previous prime is 1625136007661. The next prime is 1625136007679. The reversal of 1625136007665 is 5667006315261.

It is not a de Polignac number, because 1625136007665 - 2² = 1625136007661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1625136007661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3339949 + ... + 3795461.

It is an arithmetic number, because the mean of its divisors is an integer number (57615232776).

Almost surely, 2^{1625136007665} is an apocalyptic number.

1625136007665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1625136007665 is a deficient number, since it is larger than the sum of its proper divisors (1140395165583).

1625136007665 is a wasteful number, since it uses less digits than its factorization.

1625136007665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456378 (or 456361 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 1625136007665 in words is "one trillion, six hundred twenty-five billion, one hundred thirty-six million, seven thousand, six hundred sixty-five".