255525001 has 4 divisors (see below), whose sum is σ = 255830400. Its totient is φ = 255219604.

The previous prime is 255524999. The next prime is 255525019. The reversal of 255525001 is 100525552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255525001 - 2¹ = 255524999 is a prime.

It is a super-2 number, since 2×255525001² = 130586052272100002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255525301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151441 + ... + 153118.

It is an arithmetic number, because the mean of its divisors is an integer number (63957600).

Almost surely, 2^255525001 is an apocalyptic number.

It is an amenable number.

255525001 is a deficient number, since it is larger than the sum of its proper divisors (305399).

255525001 is an equidigital number, since it uses as much as digits as its factorization.

255525001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305398.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 255525001 is about 15985.1493893551. The cubic root of 255525001 is about 634.5674620673.

It can be divided in two parts, 2555 and 25001, that added together give a square (27556 = 166²).

The spelling of 255525001 in words is "two hundred fifty-five million, five hundred twenty-five thousand, one".