1265001522 has 24 divisors (see below), whose sum is σ = 2585005296. Its totient is φ = 412691208.

The previous prime is 1265001511. The next prime is 1265001523. The reversal of 1265001522 is 2251005621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1265001492 and 1265001501.

It is not an unprimeable number, because it can be changed into a prime (1265001523) 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, 34468 + ... + 60975.

It is an arithmetic number, because the mean of its divisors is an integer number (107708554).

Almost surely, 2^1265001522 is an apocalyptic number.

1265001522 is an abundant number, since it is smaller than the sum of its proper divisors (1320003774).

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

1265001522 is an equidigital number, since it uses as much as digits as its factorization.

1265001522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95542 (or 95495 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1265001522 is about 35566.8598838863. The cubic root of 1265001522 is about 1081.5095266539.

The spelling of 1265001522 in words is "one billion, two hundred sixty-five million, one thousand, five hundred twenty-two".