25990104 has 64 divisors (see below), whose sum is σ = 75398400. Its totient is φ = 7311744.

The previous prime is 25990099. The next prime is 25990109. The reversal of 25990104 is 40109952.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25990099) and next prime (25990109).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25990109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10102 + ... + 12410.

It is an arithmetic number, because the mean of its divisors is an integer number (1178100).

Almost surely, 2^25990104 is an apocalyptic number.

25990104 is a gapful number since it is divisible by the number (24) 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 25990104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37699200).

25990104 is an abundant number, since it is smaller than the sum of its proper divisors (49408296).

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

25990104 is a wasteful number, since it uses less digits than its factorization.

25990104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2388 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 25990104 is about 5098.0490386029. The cubic root of 25990104 is about 296.2120163518.

The spelling of 25990104 in words is "twenty-five million, nine hundred ninety thousand, one hundred four".