612125838 has 24 divisors (see below), whose sum is σ = 1354493088. Its totient is φ = 199700352.

The previous prime is 612125809. The next prime is 612125849. The reversal of 612125838 is 838521216.

It is a happy number.

612125838 is a `hidden beast` number, since 61 + 2 + 12 + 583 + 8 = 666.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 360931 + ... + 362622.

It is an arithmetic number, because the mean of its divisors is an integer number (56437212).

Almost surely, 2^612125838 is an apocalyptic number.

612125838 is an abundant number, since it is smaller than the sum of its proper divisors (742367250).

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

612125838 is a wasteful number, since it uses less digits than its factorization.

612125838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723608 (or 723605 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 612125838 is about 24741.1769728119. The cubic root of 612125838 is about 849.0766619500.

The spelling of 612125838 in words is "six hundred twelve million, one hundred twenty-five thousand, eight hundred thirty-eight".