1306742025 has 12 divisors (see below), whose sum is σ = 2160480272. Its totient is φ = 696929040.

The previous prime is 1306741993. The next prime is 1306742027. The reversal of 1306742025 is 5202476031.

It is not a de Polignac number, because 1306742025 - 2⁵ = 1306741993 is a prime.

It is a super-2 number, since 2×1306742025² = 3415149439802201250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1306741983 and 1306742001.

It is not an unprimeable number, because it can be changed into a prime (1306742027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8711539 + ... + 8711688.

Almost surely, 2^1306742025 is an apocalyptic number.

1306742025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1306742025 is a deficient number, since it is larger than the sum of its proper divisors (853738247).

1306742025 is a wasteful number, since it uses less digits than its factorization.

1306742025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17423240 (or 17423235 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 1306742025 is about 36148.8869123241. The cubic root of 1306742025 is about 1093.2763482738.

The spelling of 1306742025 in words is "one billion, three hundred six million, seven hundred forty-two thousand, twenty-five".