25275389 has 2 divisors, whose sum is σ = 25275390. Its totient is φ = 25275388.

The previous prime is 25275373. The next prime is 25275421. The reversal of 25275389 is 98357252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24334489 + 940900 = 4933^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 25275389 - 2⁴ = 25275373 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25275359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12637694 + 12637695.

It is an arithmetic number, because the mean of its divisors is an integer number (12637695).

Almost surely, 2^25275389 is an apocalyptic number.

It is an amenable number.

25275389 is a deficient number, since it is larger than the sum of its proper divisors (1).

25275389 is an equidigital number, since it uses as much as digits as its factorization.

25275389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 25275389 is about 5027.4634757500. The cubic root of 25275389 is about 293.4715118904.

The spelling of 25275389 in words is "twenty-five million, two hundred seventy-five thousand, three hundred eighty-nine".