245725123 has 16 divisors (see below), whose sum is σ = 310279680. Its totient is φ = 189611136.

The previous prime is 245725121. The next prime is 245725171. The reversal of 245725123 is 321527542.

It is a cyclic number.

It is not a de Polignac number, because 245725123 - 2¹ = 245725121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245725121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42153 + ... + 47626.

It is an arithmetic number, because the mean of its divisors is an integer number (19392480).

Almost surely, 2^245725123 is an apocalyptic number.

245725123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

245725123 is a deficient number, since it is larger than the sum of its proper divisors (64554557).

245725123 is a wasteful number, since it uses less digits than its factorization.

245725123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89826.

The product of its digits is 16800, while the sum is 31.

The square root of 245725123 is about 15675.6219334354. The cubic root of 245725123 is about 626.3491903608.

The spelling of 245725123 in words is "two hundred forty-five million, seven hundred twenty-five thousand, one hundred twenty-three".