25434923 has 4 divisors (see below), whose sum is σ = 25681968. Its totient is φ = 25187880.

The previous prime is 25434917. The next prime is 25434949. The reversal of 25434923 is 32943452.

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

It is a cyclic number.

It is not a de Polignac number, because 25434923 - 2⁸ = 25434667 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25434923.

It is not an unprimeable number, because it can be changed into a prime (25434323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123368 + ... + 123573.

It is an arithmetic number, because the mean of its divisors is an integer number (6420492).

Almost surely, 2^25434923 is an apocalyptic number.

25434923 is a deficient number, since it is larger than the sum of its proper divisors (247045).

25434923 is a wasteful number, since it uses less digits than its factorization.

25434923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247044.

The product of its digits is 25920, while the sum is 32.

The square root of 25434923 is about 5043.3047696922. The cubic root of 25434923 is about 294.0876649430.

The spelling of 25434923 in words is "twenty-five million, four hundred thirty-four thousand, nine hundred twenty-three".