248225749 has 4 divisors (see below), whose sum is σ = 248276160. Its totient is φ = 248175340.

The previous prime is 248225723. The next prime is 248225759. The reversal of 248225749 is 947522842.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248225749 is a prime.

It is a super-2 number, since 2×248225749² = 123232044933222002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248225759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16909 + ... + 27970.

It is an arithmetic number, because the mean of its divisors is an integer number (62069040).

Almost surely, 2^248225749 is an apocalyptic number.

It is an amenable number.

248225749 is a deficient number, since it is larger than the sum of its proper divisors (50411).

248225749 is an equidigital number, since it uses as much as digits as its factorization.

248225749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50410.

The product of its digits is 322560, while the sum is 43.

The square root of 248225749 is about 15755.1816555697. The cubic root of 248225749 is about 628.4667080242.

The spelling of 248225749 in words is "two hundred forty-eight million, two hundred twenty-five thousand, seven hundred forty-nine".