25040542 has 4 divisors (see below), whose sum is σ = 37560816. Its totient is φ = 12520270.

The previous prime is 25040503. The next prime is 25040557. The reversal of 25040542 is 24504052.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260134 + ... + 6260137.

It is an arithmetic number, because the mean of its divisors is an integer number (9390204).

Almost surely, 2^25040542 is an apocalyptic number.

25040542 is a deficient number, since it is larger than the sum of its proper divisors (12520274).

25040542 is a wasteful number, since it uses less digits than its factorization.

25040542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12520273.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 25040542 is about 5004.0525576776. The cubic root of 25040542 is about 292.5597491597.

Adding to 25040542 its reverse (24504052), we get a palindrome (49544594).

The spelling of 25040542 in words is "twenty-five million, forty thousand, five hundred forty-two".