25347969 has 12 divisors (see below), whose sum is σ = 38767716. Its totient is φ = 15904512.

The previous prime is 25347947. The next prime is 25347977. The reversal of 25347969 is 96974352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18378369 + 6969600 = 4287^2 + 2640^2 .

It is not a de Polignac number, because 25347969 - 2⁵ = 25347937 is a prime.

It is a super-2 number, since 2×25347969² = 1285039064849922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25347169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82684 + ... + 82989.

It is an arithmetic number, because the mean of its divisors is an integer number (3230643).

Almost surely, 2^25347969 is an apocalyptic number.

It is an amenable number.

25347969 is a deficient number, since it is larger than the sum of its proper divisors (13419747).

25347969 is a wasteful number, since it uses less digits than its factorization.

25347969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165696 (or 165693 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 25347969 is about 5034.6766529739. The cubic root of 25347969 is about 293.7521512442.

The spelling of 25347969 in words is "twenty-five million, three hundred forty-seven thousand, nine hundred sixty-nine".