25254749 has 8 divisors (see below), whose sum is σ = 27350232. Its totient is φ = 23181120.

The previous prime is 25254727. The next prime is 25254751. The reversal of 25254749 is 94745252.

It can be written as a sum of positive squares in 4 ways, for example, as 3678724 + 21576025 = 1918^2 + 4645^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25254749 - 2²⁰ = 24206173 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 (25254769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3014 + ... + 7719.

It is an arithmetic number, because the mean of its divisors is an integer number (3418779).

Almost surely, 2^25254749 is an apocalyptic number.

It is an amenable number.

25254749 is a deficient number, since it is larger than the sum of its proper divisors (2095483).

25254749 is a wasteful number, since it uses less digits than its factorization.

25254749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10927.

The product of its digits is 100800, while the sum is 38.

The square root of 25254749 is about 5025.4103315053. The cubic root of 25254749 is about 293.3916067365.

The spelling of 25254749 in words is "twenty-five million, two hundred fifty-four thousand, seven hundred forty-nine".