1257850055 has 48 divisors (see below), whose sum is σ = 1905879360. Its totient is φ = 780088320.

The previous prime is 1257850001. The next prime is 1257850109. The reversal of 1257850055 is 5500587521.

It is an interprime number because it is at equal distance from previous prime (1257850001) and next prime (1257850109).

It is not a de Polignac number, because 1257850055 - 2¹⁸ = 1257587911 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 969167 + ... + 970463.

It is an arithmetic number, because the mean of its divisors is an integer number (39705820).

Almost surely, 2^1257850055 is an apocalyptic number.

1257850055 is a deficient number, since it is larger than the sum of its proper divisors (648029305).

1257850055 is a wasteful number, since it uses less digits than its factorization.

1257850055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 38.

The square root of 1257850055 is about 35466.1818497565. The cubic root of 1257850055 is about 1079.4676317110.

The spelling of 1257850055 in words is "one billion, two hundred fifty-seven million, eight hundred fifty thousand, fifty-five".