123869025 has 144 divisors (see below), whose sum is σ = 272363520. Its totient is φ = 52617600.

The previous prime is 123868991. The next prime is 123869041. The reversal of 123869025 is 520968321.

It is not a de Polignac number, because 123869025 - 2¹⁵ = 123836257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2099446 + ... + 2099504.

Almost surely, 2^123869025 is an apocalyptic number.

123869025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123869025 is an abundant number, since it is smaller than the sum of its proper divisors (148494495).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123869025 is a wasteful number, since it uses less digits than its factorization.

123869025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 123869025 is about 11129.6462207925. The cubic root of 123869025 is about 498.4874624072.

The spelling of 123869025 in words is "one hundred twenty-three million, eight hundred sixty-nine thousand, twenty-five".