1250125631257 has 4 divisors (see below), whose sum is σ = 1279198320400. Its totient is φ = 1221052942116.

The previous prime is 1250125631221. The next prime is 1250125631273. The reversal of 1250125631257 is 7521365210521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1250125631257 - 2¹¹ = 1250125629209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1250125631057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14536344507 + ... + 14536344592.

It is an arithmetic number, because the mean of its divisors is an integer number (319799580100).

Almost surely, 2^{1250125631257} is an apocalyptic number.

It is an amenable number.

1250125631257 is a deficient number, since it is larger than the sum of its proper divisors (29072689143).

1250125631257 is an equidigital number, since it uses as much as digits as its factorization.

1250125631257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29072689142.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 1250125631257 in words is "one trillion, two hundred fifty billion, one hundred twenty-five million, six hundred thirty-one thousand, two hundred fifty-seven".