249025145 has 8 divisors (see below), whose sum is σ = 299080320. Its totient is φ = 199053360.

The previous prime is 249025141. The next prime is 249025151. The reversal of 249025145 is 541520942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 249025145 - 2² = 249025141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249025141) 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, 14075 + ... + 26384.

It is an arithmetic number, because the mean of its divisors is an integer number (37385040).

Almost surely, 2^249025145 is an apocalyptic number.

It is an amenable number.

249025145 is a deficient number, since it is larger than the sum of its proper divisors (50055175).

249025145 is a wasteful number, since it uses less digits than its factorization.

249025145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41695.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 249025145 is about 15780.5305677598. The cubic root of 249025145 is about 629.1406314290.

The spelling of 249025145 in words is "two hundred forty-nine million, twenty-five thousand, one hundred forty-five".