25998126 has 48 divisors (see below), whose sum is σ = 65992320. Its totient is φ = 6751920.

The previous prime is 25998103. The next prime is 25998149. The reversal of 25998126 is 62189952.

It is an interprime number because it is at equal distance from previous prime (25998103) and next prime (25998149).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 786 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (1374840).

Almost surely, 2^25998126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25998126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32996160).

25998126 is an abundant number, since it is smaller than the sum of its proper divisors (39994194).

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

25998126 is a wasteful number, since it uses less digits than its factorization.

25998126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8069 (or 8062 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 25998126 is about 5098.8357494628. The cubic root of 25998126 is about 296.2424890830.

The spelling of 25998126 in words is "twenty-five million, nine hundred ninety-eight thousand, one hundred twenty-six".