25092423661 has 2 divisors, whose sum is σ = 25092423662. Its totient is φ = 25092423660.

The previous prime is 25092423647. The next prime is 25092423677. The reversal of 25092423661 is 16632429052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21961461636 + 3130962025 = 148194^2 + 55955^2 .

It is a cyclic number.

It is not a de Polignac number, because 25092423661 - 2¹⁵ = 25092390893 is a prime.

It is a super-2 number, since 2×25092423661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25092423611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12546211830 + 12546211831.

It is an arithmetic number, because the mean of its divisors is an integer number (12546211831).

Almost surely, 2^25092423661 is an apocalyptic number.

It is an amenable number.

25092423661 is a deficient number, since it is larger than the sum of its proper divisors (1).

25092423661 is an equidigital number, since it uses as much as digits as its factorization.

25092423661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 25092423661 in words is "twenty-five billion, ninety-two million, four hundred twenty-three thousand, six hundred sixty-one".