625676389 has 8 divisors (see below), whose sum is σ = 674232440. Its totient is φ = 577181376.

The previous prime is 625676371. The next prime is 625676393. The reversal of 625676389 is 983676526.

It can be written as a sum of positive squares in 4 ways, for example, as 48860100 + 576816289 = 6990^2 + 24017^2 .

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 625676389 - 2²¹ = 623579237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625676309) 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, 7279 + ... + 36115.

It is an arithmetic number, because the mean of its divisors is an integer number (84279055).

Almost surely, 2^625676389 is an apocalyptic number.

It is an amenable number.

625676389 is a deficient number, since it is larger than the sum of its proper divisors (48556051).

625676389 is a wasteful number, since it uses less digits than its factorization.

625676389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30519.

The product of its digits is 3265920, while the sum is 52.

The square root of 625676389 is about 25013.5241219625. The cubic root of 625676389 is about 855.2962911877.

The spelling of 625676389 in words is "six hundred twenty-five million, six hundred seventy-six thousand, three hundred eighty-nine".