25491696 has 40 divisors (see below), whose sum is σ = 68128080. Its totient is φ = 8203776.

The previous prime is 25491689. The next prime is 25491731. The reversal of 25491696 is 69619452.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7765 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (1703202).

Almost surely, 2^25491696 is an apocalyptic number.

It is an amenable number.

25491696 is an abundant number, since it is smaller than the sum of its proper divisors (42636384).

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

25491696 is a wasteful number, since it uses less digits than its factorization.

25491696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18353 (or 18347 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 25491696 is about 5048.9301837122. The cubic root of 25491696 is about 294.3063122452.

The spelling of 25491696 in words is "twenty-five million, four hundred ninety-one thousand, six hundred ninety-six".