25042489 has 2 divisors, whose sum is σ = 25042490. Its totient is φ = 25042488.

The previous prime is 25042483. The next prime is 25042499. The reversal of 25042489 is 98424052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20548089 + 4494400 = 4533^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 25042489 - 2¹³ = 25034297 is a prime.

It is not a weakly prime, because it can be changed into another prime (25042483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12521244 + 12521245.

It is an arithmetic number, because the mean of its divisors is an integer number (12521245).

Almost surely, 2^25042489 is an apocalyptic number.

It is an amenable number.

25042489 is a deficient number, since it is larger than the sum of its proper divisors (1).

25042489 is an equidigital number, since it uses as much as digits as its factorization.

25042489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 25042489 is about 5004.2470962174. The cubic root of 25042489 is about 292.5673315178.

The spelling of 25042489 in words is "twenty-five million, forty-two thousand, four hundred eighty-nine".