155125305 has 24 divisors (see below), whose sum is σ = 269343360. Its totient is φ = 82592160.

The previous prime is 155125303. The next prime is 155125351. The reversal of 155125305 is 503521551.

155125305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155125305 - 2¹ = 155125303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155125303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27040 + ... + 32270.

It is an arithmetic number, because the mean of its divisors is an integer number (11222640).

Almost surely, 2^155125305 is an apocalyptic number.

155125305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155125305 is a deficient number, since it is larger than the sum of its proper divisors (114218055).

155125305 is a wasteful number, since it uses less digits than its factorization.

155125305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5901 (or 5898 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 155125305 is about 12454.9309512337. The cubic root of 155125305 is about 537.3132489854.

Adding to 155125305 its reverse (503521551), we get a palindrome (658646856).

The spelling of 155125305 in words is "one hundred fifty-five million, one hundred twenty-five thousand, three hundred five".