25989496 has 48 divisors (see below), whose sum is σ = 54021600. Its totient is φ = 11711232.

The previous prime is 25989487. The next prime is 25989497. The reversal of 25989496 is 69498952.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25989497) 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 11 ways as a sum of consecutive naturals, for example, 63340 + ... + 63748.

It is an arithmetic number, because the mean of its divisors is an integer number (1125450).

Almost surely, 2^25989496 is an apocalyptic number.

25989496 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25989496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27010800).

25989496 is an abundant number, since it is smaller than the sum of its proper divisors (28032104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25989496 is a wasteful number, since it uses less digits than its factorization.

25989496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 471 counting only the distinct ones).

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

The square root of 25989496 is about 5097.9894075998. The cubic root of 25989496 is about 296.2097065200.

The spelling of 25989496 in words is "twenty-five million, nine hundred eighty-nine thousand, four hundred ninety-six".