1275425907840 has 1536 divisors, whose sum is σ = 5504915520000. Its totient is φ = 271167160320.

The previous prime is 1275425907827. The next prime is 1275425907853. The reversal of 1275425907840 is 487095245721.

1275425907840 is a `hidden beast` number, since 1 + 2 + 7 + 5 + 4 + 2 + 590 + 7 + 8 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (1275425907827) and next prime (1275425907853).

It is a super-2 number, since 2×1275425907840² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2289812842 + ... + 2289813398.

It is an arithmetic number, because the mean of its divisors is an integer number (3583929375).

Almost surely, 2^{1275425907840} is an apocalyptic number.

1275425907840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275425907840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2752457760000).

1275425907840 is an abundant number, since it is smaller than the sum of its proper divisors (4229489612160).

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

1275425907840 is a wasteful number, since it uses less digits than its factorization.

1275425907840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 1275425907840 in words is "one trillion, two hundred seventy-five billion, four hundred twenty-five million, nine hundred seven thousand, eight hundred forty".