126225864981 has 6 divisors (see below), whose sum is σ = 182326249430. Its totient is φ = 84150576648.

The previous prime is 126225864923. The next prime is 126225864991. The reversal of 126225864981 is 189468522621.

126225864981 is a `hidden beast` number, since 1 + 2 + 622 + 5 + 8 + 6 + 4 + 9 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72972918225 + 53252946756 = 270135^2 + 230766^2 .

It is not a de Polignac number, because 126225864981 - 2⁶ = 126225864917 is a prime.

It is a super-2 number, since 2×126225864981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126225864991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7012548046 + ... + 7012548063.

Almost surely, 2^126225864981 is an apocalyptic number.

It is an amenable number.

126225864981 is a deficient number, since it is larger than the sum of its proper divisors (56100384449).

126225864981 is a wasteful number, since it uses less digits than its factorization.

126225864981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14025096115 (or 14025096112 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 126225864981 in words is "one hundred twenty-six billion, two hundred twenty-five million, eight hundred sixty-four thousand, nine hundred eighty-one".