625722261 has 8 divisors (see below), whose sum is σ = 840299040. Its totient is φ = 414146832.

The previous prime is 625722257. The next prime is 625722271. The reversal of 625722261 is 162227526.

625722261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 625722261 - 2² = 625722257 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625722211) 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, 749850 + ... + 750683.

It is an arithmetic number, because the mean of its divisors is an integer number (105037380).

Almost surely, 2^625722261 is an apocalyptic number.

It is an amenable number.

625722261 is a deficient number, since it is larger than the sum of its proper divisors (214576779).

625722261 is a wasteful number, since it uses less digits than its factorization.

625722261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500675.

The product of its digits is 20160, while the sum is 33.

The square root of 625722261 is about 25014.4410491220. The cubic root of 625722261 is about 855.3171929368.

Adding to 625722261 its reverse (162227526), we get a palindrome (787949787).

The spelling of 625722261 in words is "six hundred twenty-five million, seven hundred twenty-two thousand, two hundred sixty-one".