225405501 has 8 divisors (see below), whose sum is σ = 301889280. Its totient is φ = 149596032.

The previous prime is 225405491. The next prime is 225405503. The reversal of 225405501 is 105504522.

It is a happy number.

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

It is not a de Polignac number, because 225405501 - 2¹⁰ = 225404477 is a prime.

It is a super-2 number, since 2×225405501² = 101615279762122002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225405503) 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, 167796 + ... + 169133.

It is an arithmetic number, because the mean of its divisors is an integer number (37736160).

Almost surely, 2^225405501 is an apocalyptic number.

It is an amenable number.

225405501 is a deficient number, since it is larger than the sum of its proper divisors (76483779).

225405501 is a wasteful number, since it uses less digits than its factorization.

225405501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337155.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 225405501 is about 15013.5106154423. The cubic root of 225405501 is about 608.5853638298.

The spelling of 225405501 in words is "two hundred twenty-five million, four hundred five thousand, five hundred one".