25996650 has 48 divisors (see below), whose sum is σ = 65406528. Its totient is φ = 6832000.

The previous prime is 25996643. The next prime is 25996657. The reversal of 25996650 is 5669952.

25996650 = T₈₂₀ + T₈₂₁ + ... + T₈₉₀.

It is an interprime number because it is at equal distance from previous prime (25996643) and next prime (25996657).

It is a super-2 number, since 2×25996650² = 1351651622445000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25996657) 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 23 ways as a sum of consecutive naturals, for example, 9430 + ... + 11870.

It is an arithmetic number, because the mean of its divisors is an integer number (1362636).

Almost surely, 2^25996650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25996650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32703264).

25996650 is an abundant number, since it is smaller than the sum of its proper divisors (39409878).

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

25996650 is a wasteful number, since it uses less digits than its factorization.

25996650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527 (or 2522 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 25996650 is about 5098.6910084844. The cubic root of 25996650 is about 296.2368827534.

The spelling of 25996650 in words is "twenty-five million, nine hundred ninety-six thousand, six hundred fifty".