25345634 has 4 divisors (see below), whose sum is σ = 38018454. Its totient is φ = 12672816.

The previous prime is 25345603. The next prime is 25345637. The reversal of 25345634 is 43654352.

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., 23377225 + 1968409 = 4835^2 + 1403^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25345634.

It is not an unprimeable number, because it can be changed into a prime (25345637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6336407 + ... + 6336410.

Almost surely, 2^25345634 is an apocalyptic number.

25345634 is a deficient number, since it is larger than the sum of its proper divisors (12672820).

25345634 is a wasteful number, since it uses less digits than its factorization.

25345634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672819.

The product of its digits is 43200, while the sum is 32.

The square root of 25345634 is about 5034.4447558792. Note that the first 3 decimals coincide. The cubic root of 25345634 is about 293.7431310300.

Adding to 25345634 its reverse (43654352), we get a palindrome (68999986).

The spelling of 25345634 in words is "twenty-five million, three hundred forty-five thousand, six hundred thirty-four".