25929434 has 4 divisors (see below), whose sum is σ = 38894154. Its totient is φ = 12964716.

The previous prime is 25929401. The next prime is 25929439. The reversal of 25929434 is 43492952.

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., 23961025 + 1968409 = 4895^2 + 1403^2 .

It is not an unprimeable number, because it can be changed into a prime (25929439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6482357 + ... + 6482360.

Almost surely, 2^25929434 is an apocalyptic number.

25929434 is a deficient number, since it is larger than the sum of its proper divisors (12964720).

25929434 is a wasteful number, since it uses less digits than its factorization.

25929434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12964719.

The product of its digits is 77760, while the sum is 38.

The square root of 25929434 is about 5092.0952465562. The cubic root of 25929434 is about 295.9813492631.

The spelling of 25929434 in words is "twenty-five million, nine hundred twenty-nine thousand, four hundred thirty-four".