1265260026 has 32 divisors (see below), whose sum is σ = 2571222528. Its totient is φ = 414984240.

The previous prime is 1265260021. The next prime is 1265260049. The reversal of 1265260026 is 6200625621.

It is a junction number, because it is equal to n+sod(n) for n = 1265259975 and 1265260002.

It is not an unprimeable number, because it can be changed into a prime (1265260021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606381 + ... + 608463.

It is an arithmetic number, because the mean of its divisors is an integer number (80350704).

Almost surely, 2^1265260026 is an apocalyptic number.

1265260026 is an abundant number, since it is smaller than the sum of its proper divisors (1305962502).

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

1265260026 is a wasteful number, since it uses less digits than its factorization.

1265260026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1265260026 is about 35570.4937553585. The cubic root of 1265260026 is about 1081.5831907278.

Adding to 1265260026 its reverse (6200625621), we get a palindrome (7465885647).

The spelling of 1265260026 in words is "one billion, two hundred sixty-five million, two hundred sixty thousand, twenty-six".