25622864761 has 8 divisors (see below), whose sum is σ = 28266875784. Its totient is φ = 23074999680.

The previous prime is 25622864759. The next prime is 25622864779. The reversal of 25622864761 is 16746822652.

It can be written as a sum of positive squares in 4 ways, for example, as 28944400 + 25593920361 = 5380^2 + 159981^2 .

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 25622864761 - 2¹ = 25622864759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25622864741) 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, 24035926 + ... + 24036991.

It is an arithmetic number, because the mean of its divisors is an integer number (3533359473).

Almost surely, 2^25622864761 is an apocalyptic number.

It is an amenable number.

25622864761 is a deficient number, since it is larger than the sum of its proper divisors (2644011023).

25622864761 is a wasteful number, since it uses less digits than its factorization.

25622864761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48072971.

The product of its digits is 1935360, while the sum is 49.

The spelling of 25622864761 in words is "twenty-five billion, six hundred twenty-two million, eight hundred sixty-four thousand, seven hundred sixty-one".