25494015 has 16 divisors (see below), whose sum is σ = 41044608. Its totient is φ = 13512096.

The previous prime is 25493989. The next prime is 25494019. The reversal of 25494015 is 51049452.

It is not a de Polignac number, because 25494015 - 2⁷ = 25493887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25494019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2769 + ... + 7658.

It is an arithmetic number, because the mean of its divisors is an integer number (2565288).

Almost surely, 2^25494015 is an apocalyptic number.

25494015 is a deficient number, since it is larger than the sum of its proper divisors (15550593).

25494015 is a wasteful number, since it uses less digits than its factorization.

25494015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10598.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 25494015 is about 5049.1598311006. The cubic root of 25494015 is about 294.3152364016.

The spelling of 25494015 in words is "twenty-five million, four hundred ninety-four thousand, fifteen".