251248611449 has 8 divisors (see below), whose sum is σ = 274093546080. Its totient is φ = 228404368800.

The previous prime is 251248611431. The next prime is 251248611457. The reversal of 251248611449 is 944116842152.

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

It is a cyclic number.

It is not a de Polignac number, because 251248611449 - 2¹² = 251248607353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251248611469) 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, 848429 + ... + 1105589.

It is an arithmetic number, because the mean of its divisors is an integer number (34261693260).

Almost surely, 2^251248611449 is an apocalyptic number.

It is an amenable number.

251248611449 is a deficient number, since it is larger than the sum of its proper divisors (22844934631).

251248611449 is a wasteful number, since it uses less digits than its factorization.

251248611449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345991.

The product of its digits is 552960, while the sum is 47.

The spelling of 251248611449 in words is "two hundred fifty-one billion, two hundred forty-eight million, six hundred eleven thousand, four hundred forty-nine".