155025381 has 16 divisors (see below), whose sum is σ = 237178368. Its totient is φ = 88230000.

The previous prime is 155025379. The next prime is 155025433. The reversal of 155025381 is 183520551.

It is not a de Polignac number, because 155025381 - 2¹ = 155025379 is a prime.

It is a super-2 number, since 2×155025381² = 48065737508390322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155025331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9435 + ... + 19976.

It is an arithmetic number, because the mean of its divisors is an integer number (14823648).

Almost surely, 2^155025381 is an apocalyptic number.

It is an amenable number.

155025381 is a deficient number, since it is larger than the sum of its proper divisors (82152987).

155025381 is a wasteful number, since it uses less digits than its factorization.

155025381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29672.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 155025381 is about 12450.9188817533. The cubic root of 155025381 is about 537.1978540547.

The spelling of 155025381 in words is "one hundred fifty-five million, twenty-five thousand, three hundred eighty-one".