1265061507 has 8 divisors (see below), whose sum is σ = 1695225600. Its totient is φ = 839135880.

The previous prime is 1265061491. The next prime is 1265061517. The reversal of 1265061507 is 7051605621.

1265061507 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1265061507 - 2⁴ = 1265061491 is a prime.

It is a super-2 number, since 2×1265061507² = 3200761232986222098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1265061517) 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, 1058919 + ... + 1060112.

It is an arithmetic number, because the mean of its divisors is an integer number (211903200).

Almost surely, 2^1265061507 is an apocalyptic number.

1265061507 is a deficient number, since it is larger than the sum of its proper divisors (430164093).

1265061507 is a wasteful number, since it uses less digits than its factorization.

1265061507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119233.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 1265061507 is about 35567.7031448476. The cubic root of 1265061507 is about 1081.5266210532.

The spelling of 1265061507 in words is "one billion, two hundred sixty-five million, sixty-one thousand, five hundred seven".