6425969949137 has 2 divisors, whose sum is σ = 6425969949138. Its totient is φ = 6425969949136.

The previous prime is 6425969949131. The next prime is 6425969949209. The reversal of 6425969949137 is 7319499695246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5374440704656 + 1051529244481 = 2318284^2 + 1025441^2 .

It is a cyclic number.

It is not a de Polignac number, because 6425969949137 - 2³⁶ = 6357250472401 is a prime.

It is not a weakly prime, because it can be changed into another prime (6425969949131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3212984974568 + 3212984974569.

It is an arithmetic number, because the mean of its divisors is an integer number (3212984974569).

Almost surely, 2^{6425969949137} is an apocalyptic number.

It is an amenable number.

6425969949137 is a deficient number, since it is larger than the sum of its proper divisors (1).

6425969949137 is an equidigital number, since it uses as much as digits as its factorization.

6425969949137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793618560, while the sum is 74.

The spelling of 6425969949137 in words is "six trillion, four hundred twenty-five billion, nine hundred sixty-nine million, nine hundred forty-nine thousand, one hundred thirty-seven".