25696146 has 96 divisors (see below), whose sum is σ = 65427840. Its totient is φ = 6580224.

The previous prime is 25696141. The next prime is 25696147. The reversal of 25696146 is 64169652.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25696141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 351966 + ... + 352038.

It is an arithmetic number, because the mean of its divisors is an integer number (681540).

Almost surely, 2^25696146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25696146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32713920).

25696146 is an abundant number, since it is smaller than the sum of its proper divisors (39731694).

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

25696146 is a wasteful number, since it uses less digits than its factorization.

25696146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 131 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 25696146 is about 5069.1366128760. The cubic root of 25696146 is about 295.0910223765.

The spelling of 25696146 in words is "twenty-five million, six hundred ninety-six thousand, one hundred forty-six".