155225415 has 8 divisors (see below), whose sum is σ = 248360688. Its totient is φ = 82786880.

The previous prime is 155225381. The next prime is 155225417. The reversal of 155225415 is 514522551.

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

It is not a de Polignac number, because 155225415 - 2⁸ = 155225159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155225417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5174166 + ... + 5174195.

It is an arithmetic number, because the mean of its divisors is an integer number (31045086).

Almost surely, 2^155225415 is an apocalyptic number.

155225415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155225415 is a deficient number, since it is larger than the sum of its proper divisors (93135273).

155225415 is a wasteful number, since it uses less digits than its factorization.

155225415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348369.

The product of its digits is 10000, while the sum is 30.

The square root of 155225415 is about 12458.9491932506. The cubic root of 155225415 is about 537.4288090317.

Adding to 155225415 its reverse (514522551), we get a palindrome (669747966).

The spelling of 155225415 in words is "one hundred fifty-five million, two hundred twenty-five thousand, four hundred fifteen".