25196864 has 56 divisors (see below), whose sum is σ = 62349888. Its totient is φ = 9815040.

The previous prime is 25196863. The next prime is 25196881. The reversal of 25196864 is 46869152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25196861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2372 + ... + 7484.

Almost surely, 2^25196864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25196864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31174944).

25196864 is an abundant number, since it is smaller than the sum of its proper divisors (37153024).

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

25196864 is a wasteful number, since it uses less digits than its factorization.

25196864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143 (or 5133 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 25196864 is about 5019.6477964096. The cubic root of 25196864 is about 293.1672797536.

The spelling of 25196864 in words is "twenty-five million, one hundred ninety-six thousand, eight hundred sixty-four".