1257507454051 has 2 divisors, whose sum is σ = 1257507454052. Its totient is φ = 1257507454050.

The previous prime is 1257507454003. The next prime is 1257507454081. The reversal of 1257507454051 is 1504547057521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1257507454051 - 2¹⁵ = 1257507421283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1257507453992 and 1257507454010.

It is not a weakly prime, because it can be changed into another prime (1257507454001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628753727025 + 628753727026.

It is an arithmetic number, because the mean of its divisors is an integer number (628753727026).

Almost surely, 2^{1257507454051} is an apocalyptic number.

1257507454051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257507454051 is an equidigital number, since it uses as much as digits as its factorization.

1257507454051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980000, while the sum is 46.

The spelling of 1257507454051 in words is "one trillion, two hundred fifty-seven billion, five hundred seven million, four hundred fifty-four thousand, fifty-one".