625984655 has 8 divisors (see below), whose sum is σ = 753553152. Its totient is φ = 499206688.

The previous prime is 625984649. The next prime is 625984661. The reversal of 625984655 is 556489526.

It is an interprime number because it is at equal distance from previous prime (625984649) and next prime (625984661).

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

It is a cyclic number.

It is not a de Polignac number, because 625984655 - 2¹² = 625980559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195887 + ... + 199056.

It is an arithmetic number, because the mean of its divisors is an integer number (94194144).

Almost surely, 2^625984655 is an apocalyptic number.

625984655 is a deficient number, since it is larger than the sum of its proper divisors (127568497).

625984655 is a wasteful number, since it uses less digits than its factorization.

625984655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395265.

The product of its digits is 2592000, while the sum is 50.

The square root of 625984655 is about 25019.6853497401. The cubic root of 625984655 is about 855.4367341186.

The spelling of 625984655 in words is "six hundred twenty-five million, nine hundred eighty-four thousand, six hundred fifty-five".