625140385 has 16 divisors (see below), whose sum is σ = 777502800. Its totient is φ = 481954816.

The previous prime is 625140379. The next prime is 625140403. The reversal of 625140385 is 583041526.

It can be written as a sum of positive squares in 8 ways, for example, as 196112016 + 429028369 = 14004^2 + 20713^2 .

It is a cyclic number.

It is not a de Polignac number, because 625140385 - 2⁹ = 625139873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 625140385.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78717 + ... + 86293.

It is an arithmetic number, because the mean of its divisors is an integer number (48593925).

Almost surely, 2^625140385 is an apocalyptic number.

It is an amenable number.

625140385 is a deficient number, since it is larger than the sum of its proper divisors (152362415).

625140385 is a wasteful number, since it uses less digits than its factorization.

625140385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8180.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 625140385 is about 25002.8075423541. The cubic root of 625140385 is about 855.0519832056.

The spelling of 625140385 in words is "six hundred twenty-five million, one hundred forty thousand, three hundred eighty-five".