1257272652 has 24 divisors (see below), whose sum is σ = 2936001600. Its totient is φ = 418752976.

The previous prime is 1257272633. The next prime is 1257272663. The reversal of 1257272652 is 2562727521.

It is a super-2 number, since 2×1257272652² = 3161469042934226208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1257272652.

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, 26502 + ... + 56717.

It is an arithmetic number, because the mean of its divisors is an integer number (122333400).

Almost surely, 2^1257272652 is an apocalyptic number.

1257272652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1257272652 is an abundant number, since it is smaller than the sum of its proper divisors (1678728948).

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

1257272652 is a wasteful number, since it uses less digits than its factorization.

1257272652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84485 (or 84483 counting only the distinct ones).

The product of its digits is 117600, while the sum is 39.

The square root of 1257272652 is about 35458.0407242137. The cubic root of 1257272652 is about 1079.3024336303.

The spelling of 1257272652 in words is "one billion, two hundred fifty-seven million, two hundred seventy-two thousand, six hundred fifty-two".