625138446 has 16 divisors (see below), whose sum is σ = 1276879104. Its totient is φ = 203945784.

The previous prime is 625138427. The next prime is 625138447. The reversal of 625138446 is 644831526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625138447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108120 + ... + 1108683.

It is an arithmetic number, because the mean of its divisors is an integer number (79804944).

Almost surely, 2^625138446 is an apocalyptic number.

625138446 is an abundant number, since it is smaller than the sum of its proper divisors (651740658).

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

625138446 is a wasteful number, since it uses less digits than its factorization.

625138446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216855.

The product of its digits is 138240, while the sum is 39.

The square root of 625138446 is about 25002.7687666786. The cubic root of 625138446 is about 855.0510991655.

The spelling of 625138446 in words is "six hundred twenty-five million, one hundred thirty-eight thousand, four hundred forty-six".