25434785 has 8 divisors (see below), whose sum is σ = 30717096. Its totient is φ = 20217600.

The previous prime is 25434781. The next prime is 25434797. The reversal of 25434785 is 58743452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8162449 + 17272336 = 2857^2 + 4156^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25434785 - 2² = 25434781 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25434781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15416 + ... + 16985.

It is an arithmetic number, because the mean of its divisors is an integer number (3839637).

Almost surely, 2^25434785 is an apocalyptic number.

It is an amenable number.

25434785 is a deficient number, since it is larger than the sum of its proper divisors (5282311).

25434785 is a wasteful number, since it uses less digits than its factorization.

25434785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32563.

The product of its digits is 134400, while the sum is 38.

The square root of 25434785 is about 5043.2910881685. The cubic root of 25434785 is about 294.0871330736.

The spelling of 25434785 in words is "twenty-five million, four hundred thirty-four thousand, seven hundred eighty-five".