125685646963 has 2 divisors, whose sum is σ = 125685646964. Its totient is φ = 125685646962.

The previous prime is 125685646951. The next prime is 125685646973. The reversal of 125685646963 is 369646586521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125685646963 - 2²¹ = 125683549811 is a prime.

It is a super-2 number, since 2×125685646963² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125685646913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62842823481 + 62842823482.

It is an arithmetic number, because the mean of its divisors is an integer number (62842823482).

Almost surely, 2^125685646963 is an apocalyptic number.

125685646963 is a deficient number, since it is larger than the sum of its proper divisors (1).

125685646963 is an equidigital number, since it uses as much as digits as its factorization.

125685646963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55987200, while the sum is 61.

The spelling of 125685646963 in words is "one hundred twenty-five billion, six hundred eighty-five million, six hundred forty-six thousand, nine hundred sixty-three".