1246725481 has 27 divisors (see below), whose sum is σ = 1389206007. Its totient is φ = 1118589120.

The previous prime is 1246725479. The next prime is 1246725523. The reversal of 1246725481 is 1845276421.

The square root of 1246725481 is 35309.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 970634025 + 276091456 = 31155^2 + 16616^2 .

It is not a de Polignac number, because 1246725481 - 2¹ = 1246725479 is a prime.

It is a super-2 number, since 2×1246725481² = 3108648849949362722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1246725421) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18607810 + ... + 18607876.

Almost surely, 2^1246725481 is an apocalyptic number.

1246725481 is the 35309-th square number.

1246725481 is the 17655-th centered octagonal number.

It is an amenable number.

1246725481 is a deficient number, since it is larger than the sum of its proper divisors (142480526).

1246725481 is an frugal number, since it uses more digits than its factorization.

1246725481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 115 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The cubic root of 1246725481 is about 1076.2758908106.

The spelling of 1246725481 in words is "one billion, two hundred forty-six million, seven hundred twenty-five thousand, four hundred eighty-one".