625168361 has 4 divisors (see below), whose sum is σ = 626697300. Its totient is φ = 623639424.

The previous prime is 625168339. The next prime is 625168393. The reversal of 625168361 is 163861526.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 317516761 + 307651600 = 17819^2 + 17540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625168361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625168331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763856 + ... + 764673.

It is an arithmetic number, because the mean of its divisors is an integer number (156674325).

Almost surely, 2^625168361 is an apocalyptic number.

It is an amenable number.

625168361 is a deficient number, since it is larger than the sum of its proper divisors (1528939).

625168361 is a wasteful number, since it uses less digits than its factorization.

625168361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528938.

The product of its digits is 51840, while the sum is 38.

The square root of 625168361 is about 25003.3669932671. The cubic root of 625168361 is about 855.0647379820.

The spelling of 625168361 in words is "six hundred twenty-five million, one hundred sixty-eight thousand, three hundred sixty-one".