1255315153450 has 36 divisors (see below), whose sum is σ = 2480311651122. Its totient is φ = 472589228800.

The previous prime is 1255315153429. The next prime is 1255315153453. The reversal of 1255315153450 is 543515135521.

It can be written as a sum of positive squares in 9 ways, for example, as 385354151361 + 869961002089 = 620769^2 + 932717^2 .

It is a super-2 number, since 2×1255315153450² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255315153453) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 43422061 + ... + 43450960.

Almost surely, 2^{1255315153450} is an apocalyptic number.

1255315153450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255315153450 is a deficient number, since it is larger than the sum of its proper divisors (1224996497672).

1255315153450 is a wasteful number, since it uses less digits than its factorization.

1255315153450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86873067 (or 86873045 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 1255315153450 in words is "one trillion, two hundred fifty-five billion, three hundred fifteen million, one hundred fifty-three thousand, four hundred fifty".