1295657265 has 48 divisors (see below), whose sum is σ = 2418897600. Its totient is φ = 590486400.

The previous prime is 1295657197. The next prime is 1295657281. The reversal of 1295657265 is 5627565921.

It is not a de Polignac number, because 1295657265 - 2²² = 1291462961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 253990 + ... + 259040.

It is an arithmetic number, because the mean of its divisors is an integer number (50393700).

Almost surely, 2^1295657265 is an apocalyptic number.

1295657265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1295657265 is a deficient number, since it is larger than the sum of its proper divisors (1123240335).

1295657265 is a wasteful number, since it uses less digits than its factorization.

1295657265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5422 (or 5415 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 48.

The square root of 1295657265 is about 35995.2394769086. The cubic root of 1295657265 is about 1090.1762375303.

The spelling of 1295657265 in words is "one billion, two hundred ninety-five million, six hundred fifty-seven thousand, two hundred sixty-five".