25252749 has 16 divisors (see below), whose sum is σ = 37765440. Its totient is φ = 16675920.

The previous prime is 25252741. The next prime is 25252753. The reversal of 25252749 is 94725252.

It is a happy number.

It is not a de Polignac number, because 25252749 - 2³ = 25252741 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25252741) 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 15 ways as a sum of consecutive naturals, for example, 1482 + ... + 7259.

It is an arithmetic number, because the mean of its divisors is an integer number (2360340).

Almost surely, 2^25252749 is an apocalyptic number.

It is an amenable number.

25252749 is a deficient number, since it is larger than the sum of its proper divisors (12512691).

25252749 is a wasteful number, since it uses less digits than its factorization.

25252749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8857 (or 8851 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 25252749 is about 5025.2113388394. The cubic root of 25252749 is about 293.3838616756.

The spelling of 25252749 in words is "twenty-five million, two hundred fifty-two thousand, seven hundred forty-nine".