125890232861 has 2 divisors, whose sum is σ = 125890232862. Its totient is φ = 125890232860.

The previous prime is 125890232789. The next prime is 125890232917. The reversal of 125890232861 is 168232098521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125482435225 + 407797636 = 354235^2 + 20194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125890232861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125890232261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62945116430 + 62945116431.

It is an arithmetic number, because the mean of its divisors is an integer number (62945116431).

Almost surely, 2^125890232861 is an apocalyptic number.

It is an amenable number.

125890232861 is a deficient number, since it is larger than the sum of its proper divisors (1).

125890232861 is an equidigital number, since it uses as much as digits as its factorization.

125890232861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 125890232861 in words is "one hundred twenty-five billion, eight hundred ninety million, two hundred thirty-two thousand, eight hundred sixty-one".