155425556 has 24 divisors (see below), whose sum is σ = 319547424. Its totient is φ = 65213280.

The previous prime is 155425549. The next prime is 155425561. The reversal of 155425556 is 655524551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135290 + ... + 136433.

It is an arithmetic number, because the mean of its divisors is an integer number (13314476).

Almost surely, 2^155425556 is an apocalyptic number.

It is an amenable number.

155425556 is an abundant number, since it is smaller than the sum of its proper divisors (164121868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155425556 is a wasteful number, since it uses less digits than its factorization.

155425556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271751 (or 271749 counting only the distinct ones).

The product of its digits is 150000, while the sum is 38.

The square root of 155425556 is about 12466.9786235479. The cubic root of 155425556 is about 537.6596890586.

The spelling of 155425556 in words is "one hundred fifty-five million, four hundred twenty-five thousand, five hundred fifty-six".