1571250012 has 12 divisors (see below), whose sum is σ = 3666250056. Its totient is φ = 523750000.

The previous prime is 1571249993. The next prime is 1571250047. The reversal of 1571250012 is 2100521751.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65468739 + ... + 65468762.

It is an arithmetic number, because the mean of its divisors is an integer number (305520838).

Almost surely, 2^1571250012 is an apocalyptic number.

1571250012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1571250012 is an abundant number, since it is smaller than the sum of its proper divisors (2095000044).

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

1571250012 is a wasteful number, since it uses less digits than its factorization.

1571250012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130937508 (or 130937506 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 1571250012 is about 39638.9961023233. The cubic root of 1571250012 is about 1162.5592553447.

Adding to 1571250012 its reverse (2100521751), we get a palindrome (3671771763).

The spelling of 1571250012 in words is "one billion, five hundred seventy-one million, two hundred fifty thousand, twelve".