1255415315440 has 160 divisors (see below), whose sum is σ = 3539745441792. Its totient is φ = 407804544000.

The previous prime is 1255415315411. The next prime is 1255415315449. The reversal of 1255415315440 is 445135145521.

It is a super-2 number, since 2×1255415315440² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1255415315393 and 1255415315402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255415315449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1415346 + ... + 2124625.

Almost surely, 2^{1255415315440} is an apocalyptic number.

1255415315440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255415315440 is an abundant number, since it is smaller than the sum of its proper divisors (2284330126352).

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

1255415315440 is a wasteful number, since it uses less digits than its factorization.

1255415315440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540039 (or 3540033 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 1255415315440 in words is "one trillion, two hundred fifty-five billion, four hundred fifteen million, three hundred fifteen thousand, four hundred forty".