1285295460 has 48 divisors (see below), whose sum is σ = 3620405376. Its totient is φ = 340690432.

The previous prime is 1285295447. The next prime is 1285295467. The reversal of 1285295460 is 645925821.

It is a super-2 number, since 2×1285295460² = 3303968838993223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1285295467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54117 + ... + 74156.

It is an arithmetic number, because the mean of its divisors is an integer number (75425112).

Almost surely, 2^1285295460 is an apocalyptic number.

1285295460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285295460 is an abundant number, since it is smaller than the sum of its proper divisors (2335109916).

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

1285295460 is a wasteful number, since it uses less digits than its factorization.

1285295460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128452 (or 128450 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 1285295460 is about 35851.0175587807. The cubic root of 1285295460 is about 1087.2622875860.

The spelling of 1285295460 in words is "one billion, two hundred eighty-five million, two hundred ninety-five thousand, four hundred sixty".