225525145 has 8 divisors (see below), whose sum is σ = 286549704. Its totient is φ = 169807104.

The previous prime is 225525119. The next prime is 225525151. The reversal of 225525145 is 541525522.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43086096 + 182439049 = 6564^2 + 13507^2 .

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 225525145 - 2¹⁹ = 225000857 is a prime.

It is a Duffinian 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, 1326534 + ... + 1326703.

It is an arithmetic number, because the mean of its divisors is an integer number (35818713).

Almost surely, 2^225525145 is an apocalyptic number.

It is an amenable number.

225525145 is a deficient number, since it is larger than the sum of its proper divisors (61024559).

225525145 is a wasteful number, since it uses less digits than its factorization.

225525145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653259.

The product of its digits is 20000, while the sum is 31.

The square root of 225525145 is about 15017.4946312626. The cubic root of 225525145 is about 608.6930227049.

The spelling of 225525145 in words is "two hundred twenty-five million, five hundred twenty-five thousand, one hundred forty-five".