1255432545 has 24 divisors (see below), whose sum is σ = 2179322496. Its totient is φ = 668567328.

The previous prime is 1255432501. The next prime is 1255432547. The reversal of 1255432545 is 5452345521.

It is not a de Polignac number, because 1255432545 - 2⁶ = 1255432481 is a prime.

It is a super-2 number, since 2×1255432545² = 3152221750090354050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255432547) 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 23 ways as a sum of consecutive naturals, for example, 10312 + ... + 51158.

It is an arithmetic number, because the mean of its divisors is an integer number (90805104).

Almost surely, 2^1255432545 is an apocalyptic number.

1255432545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1255432545 is a deficient number, since it is larger than the sum of its proper divisors (923889951).

1255432545 is a wasteful number, since it uses less digits than its factorization.

1255432545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41541 (or 41538 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 1255432545 is about 35432.0835543156. The cubic root of 1255432545 is about 1078.7756315221.

The spelling of 1255432545 in words is "one billion, two hundred fifty-five million, four hundred thirty-two thousand, five hundred forty-five".