25252789 has 4 divisors (see below), whose sum is σ = 25297740. Its totient is φ = 25207840.

The previous prime is 25252757. The next prime is 25252811. The reversal of 25252789 is 98725252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6848689 + 18404100 = 2617^2 + 4290^2 .

It is a cyclic number.

It is not a de Polignac number, because 25252789 - 2⁵ = 25252757 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 (25252189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21622 + ... + 22759.

It is an arithmetic number, because the mean of its divisors is an integer number (6324435).

Almost surely, 2^25252789 is an apocalyptic number.

It is an amenable number.

25252789 is a deficient number, since it is larger than the sum of its proper divisors (44951).

25252789 is an equidigital number, since it uses as much as digits as its factorization.

25252789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44950.

The product of its digits is 100800, while the sum is 40.

The square root of 25252789 is about 5025.2153187699. The cubic root of 25252789 is about 293.3840165809.

It can be divided in two parts, 25252 and 789, that multiplied together give a triangular number (19923828 = T₆₃₁₂).

The spelling of 25252789 in words is "twenty-five million, two hundred fifty-two thousand, seven hundred eighty-nine".