1252775126390 has 32 divisors (see below), whose sum is σ = 2286944933184. Its totient is φ = 494011284480.

The previous prime is 1252775126377. The next prime is 1252775126401. The reversal of 1252775126390 is 936215772521.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9374522 + ... + 9507218.

It is an arithmetic number, because the mean of its divisors is an integer number (71467029162).

Almost surely, 2^{1252775126390} is an apocalyptic number.

1252775126390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1252775126390 is a deficient number, since it is larger than the sum of its proper divisors (1034169806794).

1252775126390 is a wasteful number, since it uses less digits than its factorization.

1252775126390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146072.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 1252775126390 in words is "one trillion, two hundred fifty-two billion, seven hundred seventy-five million, one hundred twenty-six thousand, three hundred ninety".