1295495220 has 24 divisors (see below), whose sum is σ = 3627386784. Its totient is φ = 345465376.

The previous prime is 1295495209. The next prime is 1295495233. The reversal of 1295495220 is 225945921.

It is a congruent number.

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, 10795734 + ... + 10795853.

It is an arithmetic number, because the mean of its divisors is an integer number (151141116).

Almost surely, 2^1295495220 is an apocalyptic number.

1295495220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1295495220 is an abundant number, since it is smaller than the sum of its proper divisors (2331891564).

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

1295495220 is a wasteful number, since it uses less digits than its factorization.

1295495220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21591599 (or 21591597 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1295495220 is about 35992.9884838700. The cubic root of 1295495220 is about 1090.1307869886.

The spelling of 1295495220 in words is "one billion, two hundred ninety-five million, four hundred ninety-five thousand, two hundred twenty".