25384491 has 48 divisors (see below), whose sum is σ = 42007680. Its totient is φ = 14636160.

The previous prime is 25384441. The next prime is 25384493. The reversal of 25384491 is 19448352.

It is not a de Polignac number, because 25384491 - 2¹¹ = 25382443 is a prime.

Its product of digits (34560) is a multiple of the sum of its prime factors (216).

It is not an unprimeable number, because it can be changed into a prime (25384493) 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, 285175 + ... + 285263.

It is an arithmetic number, because the mean of its divisors is an integer number (875160).

Almost surely, 2^25384491 is an apocalyptic number.

25384491 is a deficient number, since it is larger than the sum of its proper divisors (16623189).

25384491 is a wasteful number, since it uses less digits than its factorization.

25384491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 213 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 25384491 is about 5038.3023926716. The cubic root of 25384491 is about 293.8931654033.

The spelling of 25384491 in words is "twenty-five million, three hundred eighty-four thousand, four hundred ninety-one".