25492789 has 8 divisors (see below), whose sum is σ = 29729600. Its totient is φ = 21850668.

The previous prime is 25492783. The next prime is 25492793. The reversal of 25492789 is 98729452.

It is not a de Polignac number, because 25492789 - 2¹³ = 25484597 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25492783) 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, 36819 + ... + 37504.

It is an arithmetic number, because the mean of its divisors is an integer number (3716200).

Almost surely, 2^25492789 is an apocalyptic number.

It is an amenable number.

25492789 is a deficient number, since it is larger than the sum of its proper divisors (4236811).

25492789 is an frugal number, since it uses more digits than its factorization.

25492789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74344 (or 74330 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 25492789 is about 5049.0384233040. The cubic root of 25492789 is about 294.3105184803.

The spelling of 25492789 in words is "twenty-five million, four hundred ninety-two thousand, seven hundred eighty-nine".