126251650265 has 48 divisors (see below), whose sum is σ = 165064421808. Its totient is φ = 92659027968.

The previous prime is 126251650241. The next prime is 126251650267. The reversal of 126251650265 is 562056152621.

It can be written as a sum of positive squares in 24 ways, for example, as 126221036176 + 30614089 = 355276^2 + 5533^2 .

It is not a de Polignac number, because 126251650265 - 2²⁸ = 125983214809 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126251650267) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147317717 + ... + 147318573.

It is an arithmetic number, because the mean of its divisors is an integer number (3438842121).

Almost surely, 2^126251650265 is an apocalyptic number.

It is an amenable number.

126251650265 is a deficient number, since it is larger than the sum of its proper divisors (38812771543).

126251650265 is a wasteful number, since it uses less digits than its factorization.

126251650265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758 (or 1745 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 126251650265 in words is "one hundred twenty-six billion, two hundred fifty-one million, six hundred fifty thousand, two hundred sixty-five".