25540342 has 8 divisors (see below), whose sum is σ = 39546432. Its totient is φ = 12358200.

The previous prime is 25540309. The next prime is 25540349. The reversal of 25540342 is 24304552.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25540349) 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, 205909 + ... + 206032.

It is an arithmetic number, because the mean of its divisors is an integer number (4943304).

Almost surely, 2^25540342 is an apocalyptic number.

25540342 is a deficient number, since it is larger than the sum of its proper divisors (14006090).

25540342 is a wasteful number, since it uses less digits than its factorization.

25540342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411974.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 25540342 is about 5053.7453438020. The cubic root of 25540342 is about 294.4934022887.

Adding to 25540342 its reverse (24304552), we get a palindrome (49844894).

The spelling of 25540342 in words is "twenty-five million, five hundred forty thousand, three hundred forty-two".