1257142858552 has 32 divisors (see below), whose sum is σ = 2835660585600. Its totient is φ = 510418904544.

The previous prime is 1257142858541. The next prime is 1257142858591. The reversal of 1257142858552 is 2558582417521.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1257142858493 and 1257142858502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590761558 + ... + 590763685.

It is an arithmetic number, because the mean of its divisors is an integer number (88614393300).

Almost surely, 2^{1257142858552} is an apocalyptic number.

It is an amenable number.

1257142858552 is an abundant number, since it is smaller than the sum of its proper divisors (1578517727048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1257142858552 is a wasteful number, since it uses less digits than its factorization.

1257142858552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181525275 (or 1181525271 counting only the distinct ones).

The product of its digits is 8960000, while the sum is 55.

The spelling of 1257142858552 in words is "one trillion, two hundred fifty-seven billion, one hundred forty-two million, eight hundred fifty-eight thousand, five hundred fifty-two".