625112044261 has 4 divisors (see below), whose sum is σ = 631301272524. Its totient is φ = 618922816000.

The previous prime is 625112044231. The next prime is 625112044303. The reversal of 625112044261 is 162440211526.

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 570130704900 + 54981339361 = 755070^2 + 234481^2 .

It is a cyclic number.

It is not a de Polignac number, because 625112044261 - 2⁵ = 625112044229 is a prime.

It is a super-2 number, since 2×625112044261² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625112044231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3094613980 + ... + 3094614181.

It is an arithmetic number, because the mean of its divisors is an integer number (157825318131).

Almost surely, 2^625112044261 is an apocalyptic number.

It is an amenable number.

625112044261 is a deficient number, since it is larger than the sum of its proper divisors (6189228263).

625112044261 is a wasteful number, since it uses less digits than its factorization.

625112044261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6189228262.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 625112044261 its reverse (162440211526), we get a palindrome (787552255787).

The spelling of 625112044261 in words is "six hundred twenty-five billion, one hundred twelve million, forty-four thousand, two hundred sixty-one".