249997750005 has 32 divisors (see below), whose sum is σ = 403200000000. Its totient is φ = 132267477312.

The previous prime is 249997750003. The next prime is 249997750021. The reversal of 249997750005 is 500057799942.

It is not a de Polignac number, because 249997750005 - 2¹ = 249997750003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249997750003) 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, 1149996 + ... + 1349994.

It is an arithmetic number, because the mean of its divisors is an integer number (12600000000).

Almost surely, 2^249997750005 is an apocalyptic number.

It is an amenable number.

249997750005 is a deficient number, since it is larger than the sum of its proper divisors (153202249995).

249997750005 is a wasteful number, since it uses less digits than its factorization.

249997750005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200673.

The product of its (nonzero) digits is 7144200, while the sum is 57.

The spelling of 249997750005 in words is "two hundred forty-nine billion, nine hundred ninety-seven million, seven hundred fifty thousand, five".