25144389 has 12 divisors (see below), whose sum is σ = 37093056. Its totient is φ = 16405992.

The previous prime is 25144387. The next prime is 25144393. The reversal of 25144389 is 98344152.

It is not a de Polignac number, because 25144389 - 2¹ = 25144387 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25144387) 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, 29299 + ... + 30144.

It is an arithmetic number, because the mean of its divisors is an integer number (3091088).

Almost surely, 2^25144389 is an apocalyptic number.

It is an amenable number.

25144389 is a deficient number, since it is larger than the sum of its proper divisors (11948667).

25144389 is a wasteful number, since it uses less digits than its factorization.

25144389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59496 (or 59493 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 25144389 is about 5014.4181118052. The cubic root of 25144389 is about 292.9636215401.

It can be divided in two parts, 2514 and 4389, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 25144389 in words is "twenty-five million, one hundred forty-four thousand, three hundred eighty-nine".