25449069 has 16 divisors (see below), whose sum is σ = 35086464. Its totient is φ = 16396800.

The previous prime is 25449059. The next prime is 25449103. The reversal of 25449069 is 96094452.

It is not a de Polignac number, because 25449069 - 2¹¹ = 25447021 is a prime.

It is a super-2 number, since 2×25449069² = 1295310225933522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25449019) 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 in 15 ways as a sum of consecutive naturals, for example, 12984 + ... + 14814.

It is an arithmetic number, because the mean of its divisors is an integer number (2192904).

Almost surely, 2^25449069 is an apocalyptic number.

It is an amenable number.

25449069 is a deficient number, since it is larger than the sum of its proper divisors (9637395).

25449069 is a wasteful number, since it uses less digits than its factorization.

25449069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 25449069 is about 5044.7070281633. The cubic root of 25449069 is about 294.1421752069.

The spelling of 25449069 in words is "twenty-five million, four hundred forty-nine thousand, sixty-nine".