155225005 has 16 divisors (see below), whose sum is σ = 200962944. Its totient is φ = 114419520.

The previous prime is 155224987. The next prime is 155225009. The reversal of 155225005 is 500522551.

It is a happy number.

It is not a de Polignac number, because 155225005 - 2²¹ = 153127853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155225009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40210 + ... + 43900.

It is an arithmetic number, because the mean of its divisors is an integer number (12560184).

Almost surely, 2^155225005 is an apocalyptic number.

It is an amenable number.

155225005 is a deficient number, since it is larger than the sum of its proper divisors (45737939).

155225005 is a wasteful number, since it uses less digits than its factorization.

155225005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 155225005 is about 12458.9327392036. The cubic root of 155225005 is about 537.4283358575.

Adding to 155225005 its reverse (500522551), we get a palindrome (655747556).

The spelling of 155225005 in words is "one hundred fifty-five million, two hundred twenty-five thousand, five".