1250126378125 has 12 divisors (see below), whose sum is σ = 1562557966452. Its totient is φ = 1000101100000.

The previous prime is 1250126378113. The next prime is 1250126378131. The reversal of 1250126378125 is 5218736210521.

It can be written as a sum of positive squares in 6 ways, for example, as 1081936986244 + 168189391881 = 1040162^2 + 410109^2 .

It is not a de Polignac number, because 1250126378125 - 2⁵ = 1250126378093 is a prime.

It is a super-2 number, since 2×1250126378125² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200017096 + ... + 200023345.

It is an arithmetic number, because the mean of its divisors is an integer number (130213163871).

Almost surely, 2^{1250126378125} is an apocalyptic number.

It is an amenable number.

1250126378125 is a deficient number, since it is larger than the sum of its proper divisors (312431588327).

1250126378125 is an frugal number, since it uses more digits than its factorization.

1250126378125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400040466 (or 400040446 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 1250126378125 in words is "one trillion, two hundred fifty billion, one hundred twenty-six million, three hundred seventy-eight thousand, one hundred twenty-five".