1425664632565 has 32 divisors (see below), whose sum is σ = 1853831650176. Its totient is φ = 1048323655680.

The previous prime is 1425664632541. The next prime is 1425664632569. The reversal of 1425664632565 is 5652364665241.

It is not a de Polignac number, because 1425664632565 - 2¹⁵ = 1425664599797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425664632569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28787625 + ... + 28837105.

It is an arithmetic number, because the mean of its divisors is an integer number (57932239068).

Almost surely, 2^{1425664632565} is an apocalyptic number.

It is an amenable number.

1425664632565 is a deficient number, since it is larger than the sum of its proper divisors (428167017611).

1425664632565 is a wasteful number, since it uses less digits than its factorization.

1425664632565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57429.

The product of its digits is 31104000, while the sum is 55.

The spelling of 1425664632565 in words is "one trillion, four hundred twenty-five billion, six hundred sixty-four million, six hundred thirty-two thousand, five hundred sixty-five".