155425211 has 4 divisors (see below), whose sum is σ = 155684424. Its totient is φ = 155166000.

The previous prime is 155425199. The next prime is 155425217. The reversal of 155425211 is 112524551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155425211 - 2⁶ = 155425147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155425217) 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, 128705 + ... + 129906.

It is an arithmetic number, because the mean of its divisors is an integer number (38921106).

Almost surely, 2^155425211 is an apocalyptic number.

155425211 is a deficient number, since it is larger than the sum of its proper divisors (259213).

155425211 is an equidigital number, since it uses as much as digits as its factorization.

155425211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259212.

The product of its digits is 2000, while the sum is 26.

The square root of 155425211 is about 12466.9647869881. The cubic root of 155425211 is about 537.6592912417.

Adding to 155425211 its reverse (112524551), we get a palindrome (267949762).

The spelling of 155425211 in words is "one hundred fifty-five million, four hundred twenty-five thousand, two hundred eleven".