1255545501 has 32 divisors (see below), whose sum is σ = 1963831296. Its totient is φ = 698544000.

The previous prime is 1255545497. The next prime is 1255545503. The reversal of 1255545501 is 1055455521.

It is not a de Polignac number, because 1255545501 - 2² = 1255545497 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255545503) 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, 542136 + ... + 544446.

It is an arithmetic number, because the mean of its divisors is an integer number (61369728).

Almost surely, 2^1255545501 is an apocalyptic number.

It is an amenable number.

1255545501 is a deficient number, since it is larger than the sum of its proper divisors (708285795).

1255545501 is a wasteful number, since it uses less digits than its factorization.

1255545501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993.

The product of its (nonzero) digits is 25000, while the sum is 33.

The square root of 1255545501 is about 35433.6774975446. The cubic root of 1255545501 is about 1078.8079843889.

The spelling of 1255545501 in words is "one billion, two hundred fifty-five million, five hundred forty-five thousand, five hundred one".