155425553 has 8 divisors (see below), whose sum is σ = 156703968. Its totient is φ = 154151424.

The previous prime is 155425549. The next prime is 155425561. The reversal of 155425553 is 355524551.

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 155425553 - 2² = 155425549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155425573) 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, 134225 + ... + 135377.

It is an arithmetic number, because the mean of its divisors is an integer number (19587996).

Almost surely, 2^155425553 is an apocalyptic number.

It is an amenable number.

155425553 is a deficient number, since it is larger than the sum of its proper divisors (1278415).

155425553 is a wasteful number, since it uses less digits than its factorization.

155425553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143.

The product of its digits is 75000, while the sum is 35.

The square root of 155425553 is about 12466.9785032300. The cubic root of 155425553 is about 537.6596855993.

The spelling of 155425553 in words is "one hundred fifty-five million, four hundred twenty-five thousand, five hundred fifty-three".