245999999 has 8 divisors (see below), whose sum is σ = 284994720. Its totient is φ = 207968256.

The previous prime is 245999993. The next prime is 246000059. The reversal of 245999999 is 999999542.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245999999 is a prime.

It is a Duffinian number.

245999999 is a modest number, since divided by 99999 gives 2459 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245999993) 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, 240194 + ... + 241215.

It is an arithmetic number, because the mean of its divisors is an integer number (35624340).

Almost surely, 2^245999999 is an apocalyptic number.

245999999 is a deficient number, since it is larger than the sum of its proper divisors (38994721).

245999999 is an equidigital number, since it uses as much as digits as its factorization.

245999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481489.

The product of its digits is 21257640, while the sum is 65.

The square root of 245999999 is about 15684.3871094793. The cubic root of 245999999 is about 626.5826547568.

The spelling of 245999999 in words is "two hundred forty-five million, nine hundred ninety-nine thousand, nine hundred ninety-nine".