1265572516 has 24 divisors (see below), whose sum is σ = 2488820544. Its totient is φ = 558713760.

The previous prime is 1265572459. The next prime is 1265572547. The reversal of 1265572516 is 6152755621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527890 + ... + 530281.

It is an arithmetic number, because the mean of its divisors is an integer number (103700856).

Almost surely, 2^1265572516 is an apocalyptic number.

It is an amenable number.

1265572516 is a deficient number, since it is larger than the sum of its proper divisors (1223248028).

1265572516 is a wasteful number, since it uses less digits than its factorization.

1265572516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058211 (or 1058209 counting only the distinct ones).

The product of its digits is 126000, while the sum is 40.

The square root of 1265572516 is about 35574.8860293325. The cubic root of 1265572516 is about 1081.6722254199.

The spelling of 1265572516 in words is "one billion, two hundred sixty-five million, five hundred seventy-two thousand, five hundred sixteen".