123649325 has 6 divisors (see below), whose sum is σ = 153325194. Its totient is φ = 98919440.

The previous prime is 123649319. The next prime is 123649327. The reversal of 123649325 is 523946321.

It can be written as a sum of positive squares in 3 ways, for example, as 2253001 + 121396324 = 1501^2 + 11018^2 .

It is not a de Polignac number, because 123649325 - 2¹² = 123645229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123649327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2472962 + ... + 2473011.

It is an arithmetic number, because the mean of its divisors is an integer number (25554199).

Almost surely, 2^123649325 is an apocalyptic number.

It is an amenable number.

123649325 is a deficient number, since it is larger than the sum of its proper divisors (29675869).

123649325 is an equidigital number, since it uses as much as digits as its factorization.

123649325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945983 (or 4945978 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 123649325 is about 11119.7718052126. The cubic root of 123649325 is about 498.1925742973.

The spelling of 123649325 in words is "one hundred twenty-three million, six hundred forty-nine thousand, three hundred twenty-five".