249425157 has 16 divisors (see below), whose sum is σ = 338764032. Its totient is φ = 163197120.

The previous prime is 249425149. The next prime is 249425171. The reversal of 249425157 is 751524942.

It is not a de Polignac number, because 249425157 - 2³ = 249425149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249425117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100708 + ... + 103154.

It is an arithmetic number, because the mean of its divisors is an integer number (21172752).

Almost surely, 2^249425157 is an apocalyptic number.

It is an amenable number.

249425157 is a deficient number, since it is larger than the sum of its proper divisors (89338875).

249425157 is a wasteful number, since it uses less digits than its factorization.

249425157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068.

The product of its digits is 100800, while the sum is 39.

The square root of 249425157 is about 15793.1997074690. The cubic root of 249425157 is about 629.4773165353.

The spelling of 249425157 in words is "two hundred forty-nine million, four hundred twenty-five thousand, one hundred fifty-seven".