25378287351 has 8 divisors (see below), whose sum is σ = 33907200384. Its totient is φ = 16884116280.

The previous prime is 25378287349. The next prime is 25378287371. The reversal of 25378287351 is 15378287352.

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

It is not a de Polignac number, because 25378287351 - 2¹ = 25378287349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25378287294 and 25378287303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25378287371) 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, 8683785 + ... + 8686706.

It is an arithmetic number, because the mean of its divisors is an integer number (4238400048).

Almost surely, 2^25378287351 is an apocalyptic number.

25378287351 is a deficient number, since it is larger than the sum of its proper divisors (8528913033).

25378287351 is a wasteful number, since it uses less digits than its factorization.

25378287351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17370981.

The product of its digits is 2822400, while the sum is 51.

Subtracting from 25378287351 its reverse (15378287352), we obtain a palindrome (9999999999).

The spelling of 25378287351 in words is "twenty-five billion, three hundred seventy-eight million, two hundred eighty-seven thousand, three hundred fifty-one".