25387677678351 has 8 divisors (see below), whose sum is σ = 33850833306880. Its totient is φ = 16924820251032.

The previous prime is 25387677678347. The next prime is 25387677678359. The reversal of 25387677678351 is 15387677678352.

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 25387677678351 - 2² = 25387677678347 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 (25387677678359) 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, 74351575 + ... + 74692248.

It is an arithmetic number, because the mean of its divisors is an integer number (4231354163360).

Almost surely, 2^{25387677678351} is an apocalyptic number.

25387677678351 is a deficient number, since it is larger than the sum of its proper divisors (8463155628529).

25387677678351 is a wasteful number, since it uses less digits than its factorization.

25387677678351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149100605.

The product of its digits is 2489356800, while the sum is 75.

Subtracting from 25387677678351 its reverse (15387677678352), we obtain a palindrome (9999999999999).

The spelling of 25387677678351 in words is "twenty-five trillion, three hundred eighty-seven billion, six hundred seventy-seven million, six hundred seventy-eight thousand, three hundred fifty-one".