25138765126387 has 8 divisors (see below), whose sum is σ = 27425037931200. Its totient is φ = 22852647408360.

The previous prime is 25138765126351. The next prime is 25138765126421. The reversal of 25138765126387 is 78362156783152.

It is a happy number.

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

It is not a de Polignac number, because 25138765126387 - 2¹⁵ = 25138765093619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25138765126337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38432637 + ... + 39081262.

It is an arithmetic number, because the mean of its divisors is an integer number (3428129741400).

Almost surely, 2^{25138765126387} is an apocalyptic number.

25138765126387 is a deficient number, since it is larger than the sum of its proper divisors (2286272804813).

25138765126387 is a wasteful number, since it uses less digits than its factorization.

25138765126387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77543393.

The product of its digits is 101606400, while the sum is 64.

The spelling of 25138765126387 in words is "twenty-five trillion, one hundred thirty-eight billion, seven hundred sixty-five million, one hundred twenty-six thousand, three hundred eighty-seven".