25484649 has 16 divisors (see below), whose sum is σ = 37221120. Its totient is φ = 15438080.

The previous prime is 25484647. The next prime is 25484651. The reversal of 25484649 is 94648452.

It is an interprime number because it is at equal distance from previous prime (25484647) and next prime (25484651).

It is a cyclic number.

It is not a de Polignac number, because 25484649 - 2¹ = 25484647 is a prime.

Its product of digits (276480) is a multiple of the sum of its prime divisors (17280).

It is a self number, because there is not a number n which added to its sum of digits gives 25484649.

It is not an unprimeable number, because it can be changed into a prime (25484647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7137 + ... + 10094.

It is an arithmetic number, because the mean of its divisors is an integer number (2326320).

Almost surely, 2^25484649 is an apocalyptic number.

25484649 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

25484649 is a deficient number, since it is larger than the sum of its proper divisors (11736471).

25484649 is a wasteful number, since it uses less digits than its factorization.

25484649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17280.

The product of its digits is 276480, while the sum is 42.

The square root of 25484649 is about 5048.2322648626. The cubic root of 25484649 is about 294.2791901094.

The spelling of 25484649 in words is "twenty-five million, four hundred eighty-four thousand, six hundred forty-nine".