155425673 has 4 divisors (see below), whose sum is σ = 167381508. Its totient is φ = 143469840.

The previous prime is 155425649. The next prime is 155425691. The reversal of 155425673 is 376524551.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42471289 + 112954384 = 6517^2 + 10628^2 .

It is a cyclic number.

It is not a de Polignac number, because 155425673 - 2⁶ = 155425609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155425573) 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 3 ways as a sum of consecutive naturals, for example, 5977898 + ... + 5977923.

It is an arithmetic number, because the mean of its divisors is an integer number (41845377).

Almost surely, 2^155425673 is an apocalyptic number.

155425673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155425673 is a deficient number, since it is larger than the sum of its proper divisors (11955835).

155425673 is a wasteful number, since it uses less digits than its factorization.

155425673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11955834.

The product of its digits is 126000, while the sum is 38.

The square root of 155425673 is about 12466.9833159430. The cubic root of 155425673 is about 537.6598239702.

The spelling of 155425673 in words is "one hundred fifty-five million, four hundred twenty-five thousand, six hundred seventy-three".