25489699 has 2 divisors, whose sum is σ = 25489700. Its totient is φ = 25489698.

The previous prime is 25489693. The next prime is 25489729. The reversal of 25489699 is 99698452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25489699 - 2⁷ = 25489571 is a prime.

It is a super-2 number, since 2×25489699² = 1299449510221202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25489693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12744849 + 12744850.

It is an arithmetic number, because the mean of its divisors is an integer number (12744850).

Almost surely, 2^25489699 is an apocalyptic number.

25489699 is a deficient number, since it is larger than the sum of its proper divisors (1).

25489699 is an equidigital number, since it uses as much as digits as its factorization.

25489699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 52.

The square root of 25489699 is about 5048.7324151712. The cubic root of 25489699 is about 294.2986268006.

The spelling of 25489699 in words is "twenty-five million, four hundred eighty-nine thousand, six hundred ninety-nine".