625873987 has 8 divisors (see below), whose sum is σ = 642875904. Its totient is φ = 608983368.

The previous prime is 625873943. The next prime is 625873991. The reversal of 625873987 is 789378526.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625873987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625873387) 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, 16363 + ... + 38980.

It is an arithmetic number, because the mean of its divisors is an integer number (80359488).

Almost surely, 2^625873987 is an apocalyptic number.

625873987 is a deficient number, since it is larger than the sum of its proper divisors (17001917).

625873987 is a wasteful number, since it uses less digits than its factorization.

625873987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55649.

The product of its digits is 5080320, while the sum is 55.

The square root of 625873987 is about 25017.4736334427. The cubic root of 625873987 is about 855.3863201821.

The spelling of 625873987 in words is "six hundred twenty-five million, eight hundred seventy-three thousand, nine hundred eighty-seven".