155925489 has 8 divisors (see below), whose sum is σ = 215069760. Its totient is φ = 100365776.

The previous prime is 155925449. The next prime is 155925493. The reversal of 155925489 is 984529551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155925489 - 2⁷ = 155925361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155925449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896037 + ... + 896210.

It is an arithmetic number, because the mean of its divisors is an integer number (26883720).

Almost surely, 2^155925489 is an apocalyptic number.

It is an amenable number.

155925489 is a deficient number, since it is larger than the sum of its proper divisors (59144271).

155925489 is a wasteful number, since it uses less digits than its factorization.

155925489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792279.

The product of its digits is 648000, while the sum is 48.

The square root of 155925489 is about 12487.0128133193. The cubic root of 155925489 is about 538.2355406034.

The spelling of 155925489 in words is "one hundred fifty-five million, nine hundred twenty-five thousand, four hundred eighty-nine".