25497492 has 12 divisors (see below), whose sum is σ = 59494176. Its totient is φ = 8499160.

The previous prime is 25497491. The next prime is 25497509. The reversal of 25497492 is 29479452.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25497491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062384 + ... + 1062407.

It is an arithmetic number, because the mean of its divisors is an integer number (4957848).

Almost surely, 2^25497492 is an apocalyptic number.

It is an amenable number.

25497492 is an abundant number, since it is smaller than the sum of its proper divisors (33996684).

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

25497492 is a wasteful number, since it uses less digits than its factorization.

25497492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124798 (or 2124796 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 25497492 is about 5049.5041340710. The cubic root of 25497492 is about 294.3286158497.

The spelling of 25497492 in words is "twenty-five million, four hundred ninety-seven thousand, four hundred ninety-two".