1272725016 has 32 divisors (see below), whose sum is σ = 3200214960. Its totient is φ = 421788032.

The previous prime is 1272725011. The next prime is 1272725029. The reversal of 1272725016 is 6105272721.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272725011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149115 + ... + 157418.

Almost surely, 2^1272725016 is an apocalyptic number.

It is an amenable number.

1272725016 is an abundant number, since it is smaller than the sum of its proper divisors (1927489944).

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

1272725016 is a wasteful number, since it uses less digits than its factorization.

1272725016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306715 (or 306711 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 1272725016 is about 35675.2717719151. The cubic root of 1272725016 is about 1083.7061221391.

Adding to 1272725016 its reverse (6105272721), we get a palindrome (7377997737).

The spelling of 1272725016 in words is "one billion, two hundred seventy-two million, seven hundred twenty-five thousand, sixteen".