25494291 has 8 divisors (see below), whose sum is σ = 37769360. Its totient is φ = 16996176.

The previous prime is 25494263. The next prime is 25494299. The reversal of 25494291 is 19249452.

It is not a de Polignac number, because 25494291 - 2¹⁸ = 25232147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25494299) 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, 472090 + ... + 472143.

It is an arithmetic number, because the mean of its divisors is an integer number (4721170).

Almost surely, 2^25494291 is an apocalyptic number.

25494291 is a deficient number, since it is larger than the sum of its proper divisors (12275069).

25494291 is an equidigital number, since it uses as much as digits as its factorization.

25494291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944242 (or 944236 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 25494291 is about 5049.1871623064. The cubic root of 25494291 is about 294.3162984902.

The spelling of 25494291 in words is "twenty-five million, four hundred ninety-four thousand, two hundred ninety-one".