1255875240 has 32 divisors (see below), whose sum is σ = 3767626080. Its totient is φ = 334900032.

The previous prime is 1255875217. The next prime is 1255875263. The reversal of 1255875240 is 425785521.

It is an interprime number because it is at equal distance from previous prime (1255875217) and next prime (1255875263).

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, 5232694 + ... + 5232933.

It is an arithmetic number, because the mean of its divisors is an integer number (117738315).

Almost surely, 2^1255875240 is an apocalyptic number.

1255875240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255875240 is an abundant number, since it is smaller than the sum of its proper divisors (2511750840).

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

1255875240 is a wasteful number, since it uses less digits than its factorization.

1255875240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10465641 (or 10465637 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 39.

The square root of 1255875240 is about 35438.3300960979. The cubic root of 1255875240 is about 1078.9024171619.

The spelling of 1255875240 in words is "one billion, two hundred fifty-five million, eight hundred seventy-five thousand, two hundred forty".