25378351 has 4 divisors (see below), whose sum is σ = 25423992. Its totient is φ = 25332712.

The previous prime is 25378349. The next prime is 25378369. The reversal of 25378351 is 15387352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25378351 - 2¹ = 25378349 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 (25378321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21976 + ... + 23101.

It is an arithmetic number, because the mean of its divisors is an integer number (6355998).

Almost surely, 2^25378351 is an apocalyptic number.

25378351 is a deficient number, since it is larger than the sum of its proper divisors (45641).

25378351 is an equidigital number, since it uses as much as digits as its factorization.

25378351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45640.

The product of its digits is 25200, while the sum is 34.

The square root of 25378351 is about 5037.6930235972. The cubic root of 25378351 is about 293.8694678689.

Subtracting from 25378351 its reverse (15387352), we obtain a palindrome (9990999).

The spelling of 25378351 in words is "twenty-five million, three hundred seventy-eight thousand, three hundred fifty-one".