125471099969 has 2 divisors, whose sum is σ = 125471099970. Its totient is φ = 125471099968.

The previous prime is 125471099927. The next prime is 125471099983. The reversal of 125471099969 is 969990174521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89513459344 + 35957640625 = 299188^2 + 189625^2 .

It is an emirp because it is prime and its reverse (969990174521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125471099969 - 2²⁴ = 125454322753 is a prime.

It is a super-2 number, since 2×125471099969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125471092969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62735549984 + 62735549985.

It is an arithmetic number, because the mean of its divisors is an integer number (62735549985).

Almost surely, 2^125471099969 is an apocalyptic number.

It is an amenable number.

125471099969 is a deficient number, since it is larger than the sum of its proper divisors (1).

125471099969 is an equidigital number, since it uses as much as digits as its factorization.

125471099969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11022480, while the sum is 62.

The spelling of 125471099969 in words is "one hundred twenty-five billion, four hundred seventy-one million, ninety-nine thousand, nine hundred sixty-nine".