1265208001 has 8 divisors (see below), whose sum is σ = 1283952384. Its totient is φ = 1246489440.

The previous prime is 1265207987. The next prime is 1265208029. The reversal of 1265208001 is 1008025621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1265208001 - 2⁷ = 1265207873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265208031) 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, 106765 + ... + 118021.

It is an arithmetic number, because the mean of its divisors is an integer number (160494048).

Almost surely, 2^1265208001 is an apocalyptic number.

It is an amenable number.

1265208001 is a deficient number, since it is larger than the sum of its proper divisors (18744383).

1265208001 is a wasteful number, since it uses less digits than its factorization.

1265208001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12911.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1265208001 is about 35569.7624535222. The cubic root of 1265208001 is about 1081.5683663345.

The spelling of 1265208001 in words is "one billion, two hundred sixty-five million, two hundred eight thousand, one".