25379489 has 2 divisors, whose sum is σ = 25379490. Its totient is φ = 25379488.

The previous prime is 25379479. The next prime is 25379531. The reversal of 25379489 is 98497352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25331089 + 48400 = 5033^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 25379489 - 2²⁴ = 8602273 is a prime.

It is a super-2 number, since 2×25379489² = 1288236923802242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25379449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12689744 + 12689745.

It is an arithmetic number, because the mean of its divisors is an integer number (12689745).

Almost surely, 2^25379489 is an apocalyptic number.

It is an amenable number.

25379489 is a deficient number, since it is larger than the sum of its proper divisors (1).

25379489 is an equidigital number, since it uses as much as digits as its factorization.

25379489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 25379489 is about 5037.8059708568. The cubic root of 25379489 is about 293.8738603063.

The spelling of 25379489 in words is "twenty-five million, three hundred seventy-nine thousand, four hundred eighty-nine".