25532389 has 2 divisors, whose sum is σ = 25532390. Its totient is φ = 25532388.

The previous prime is 25532363. The next prime is 25532393. The reversal of 25532389 is 98323552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24581764 + 950625 = 4958^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 25532389 - 2⁵ = 25532357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25532329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12766194 + 12766195.

It is an arithmetic number, because the mean of its divisors is an integer number (12766195).

Almost surely, 2^25532389 is an apocalyptic number.

It is an amenable number.

25532389 is a deficient number, since it is larger than the sum of its proper divisors (1).

25532389 is an equidigital number, since it uses as much as digits as its factorization.

25532389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 25532389 is about 5052.9584403595. The cubic root of 25532389 is about 294.4628317091.

It can be divided in two parts, 25532 and 389, that added together give a square (25921 = 161²).

The spelling of 25532389 in words is "twenty-five million, five hundred thirty-two thousand, three hundred eighty-nine".