1257755253 has 16 divisors (see below), whose sum is σ = 1767970176. Its totient is φ = 793774080.

The previous prime is 1257755221. The next prime is 1257755267. The reversal of 1257755253 is 3525577521.

It is not a de Polignac number, because 1257755253 - 2⁵ = 1257755221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257757253) 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 in 15 ways as a sum of consecutive naturals, for example, 87268 + ... + 100653.

It is an arithmetic number, because the mean of its divisors is an integer number (110498136).

Almost surely, 2^1257755253 is an apocalyptic number.

It is an amenable number.

1257755253 is a deficient number, since it is larger than the sum of its proper divisors (510214923).

1257755253 is a wasteful number, since it uses less digits than its factorization.

1257755253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188044.

The product of its digits is 367500, while the sum is 42.

The square root of 1257755253 is about 35464.8453119424. The cubic root of 1257755253 is about 1079.4405118220.

The spelling of 1257755253 in words is "one billion, two hundred fifty-seven million, seven hundred fifty-five thousand, two hundred fifty-three".