625516642 has 8 divisors (see below), whose sum is σ = 938691036. Its totient is φ = 312619632.

The previous prime is 625516637. The next prime is 625516673. The reversal of 625516642 is 246615526.

It can be written as a sum of positive squares in 2 ways, for example, as 558424161 + 67092481 = 23631^2 + 8191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63613 + ... + 72784.

Almost surely, 2^625516642 is an apocalyptic number.

625516642 is a deficient number, since it is larger than the sum of its proper divisors (313174394).

625516642 is a wasteful number, since it uses less digits than its factorization.

625516642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138692.

The product of its digits is 86400, while the sum is 37.

The square root of 625516642 is about 25010.3307055305. The cubic root of 625516642 is about 855.2234938925.

The spelling of 625516642 in words is "six hundred twenty-five million, five hundred sixteen thousand, six hundred forty-two".