25040434 has 4 divisors (see below), whose sum is σ = 37560654. Its totient is φ = 12520216.

The previous prime is 25040419. The next prime is 25040443. The reversal of 25040434 is 43404052.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 17614809 + 7425625 = 4197^2 + 2725^2 .

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260107 + ... + 6260110.

Almost surely, 2^25040434 is an apocalyptic number.

25040434 is a deficient number, since it is larger than the sum of its proper divisors (12520220).

25040434 is a wasteful number, since it uses less digits than its factorization.

25040434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12520219.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 25040434 is about 5004.0417664124. The cubic root of 25040434 is about 292.5593285552.

Adding to 25040434 its reverse (43404052), we get a palindrome (68444486).

The spelling of 25040434 in words is "twenty-five million, forty thousand, four hundred thirty-four".