1251048799 has 16 divisors (see below), whose sum is σ = 1679731200. Its totient is φ = 899854560.

The previous prime is 1251048797. The next prime is 1251048829. The reversal of 1251048799 is 9978401521.

It is not a de Polignac number, because 1251048799 - 2¹ = 1251048797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251048797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623899 + ... + 625900.

It is an arithmetic number, because the mean of its divisors is an integer number (104983200).

Almost surely, 2^1251048799 is an apocalyptic number.

1251048799 is a deficient number, since it is larger than the sum of its proper divisors (428682401).

1251048799 is a wasteful number, since it uses less digits than its factorization.

1251048799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249830.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 1251048799 is about 35370.1682071205. The cubic root of 1251048799 is about 1077.5185366542.

It can be divided in two parts, 125104 and 8799, that added together give a triangular number (133903 = T₅₁₇).

The spelling of 1251048799 in words is "one billion, two hundred fifty-one million, forty-eight thousand, seven hundred ninety-nine".