1025609265638 has 16 divisors (see below), whose sum is σ = 1552640108400. Its totient is φ = 508079902176.

The previous prime is 1025609265631. The next prime is 1025609265671. The reversal of 1025609265638 is 8365629065201.

It is a self number, because there is not a number n which added to its sum of digits gives 1025609265638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025609265631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4216256 + ... + 4452867.

It is an arithmetic number, because the mean of its divisors is an integer number (97040006775).

Almost surely, 2^{1025609265638} is an apocalyptic number.

1025609265638 is a deficient number, since it is larger than the sum of its proper divisors (527030842762).

1025609265638 is a wasteful number, since it uses less digits than its factorization.

1025609265638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8669671.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 1025609265638 in words is "one trillion, twenty-five billion, six hundred nine million, two hundred sixty-five thousand, six hundred thirty-eight".