1238408625 has 64 divisors (see below), whose sum is σ = 2109279744. Its totient is φ = 645120000.

The previous prime is 1238408617. The next prime is 1238408627. The reversal of 1238408625 is 5268048321.

It is not a de Polignac number, because 1238408625 - 2³ = 1238408617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1238408627) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5138505 + ... + 5138745.

It is an arithmetic number, because the mean of its divisors is an integer number (32957496).

Almost surely, 2^1238408625 is an apocalyptic number.

1238408625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1238408625 is a deficient number, since it is larger than the sum of its proper divisors (870871119).

1238408625 is a wasteful number, since it uses less digits than its factorization.

1238408625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 1238408625 is about 35191.0304623209. The cubic root of 1238408625 is about 1073.8772846832.

The spelling of 1238408625 in words is "one billion, two hundred thirty-eight million, four hundred eight thousand, six hundred twenty-five".