249148005 has 32 divisors (see below), whose sum is σ = 422972928. Its totient is φ = 124800000.

The previous prime is 249148001. The next prime is 249148013. The reversal of 249148005 is 500841942.

It is not a de Polignac number, because 249148005 - 2² = 249148001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249148001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190855 + ... + 192155.

It is an arithmetic number, because the mean of its divisors is an integer number (13217904).

Almost surely, 2^249148005 is an apocalyptic number.

It is an amenable number.

249148005 is a deficient number, since it is larger than the sum of its proper divisors (173824923).

249148005 is a wasteful number, since it uses less digits than its factorization.

249148005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 249148005 is about 15784.4228592622. The cubic root of 249148005 is about 629.2440794962.

Adding to 249148005 its reverse (500841942), we get a palindrome (749989947).

The spelling of 249148005 in words is "two hundred forty-nine million, one hundred forty-eight thousand, five".