225140545 has 24 divisors (see below), whose sum is σ = 314945064. Its totient is φ = 154054656.

The previous prime is 225140533. The next prime is 225140551. The reversal of 225140545 is 545041522.

It can be written as a sum of positive squares in 4 ways, for example, as 46009089 + 179131456 = 6783^2 + 13384^2 .

It is not a de Polignac number, because 225140545 - 2²³ = 216751937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194689 + ... + 195841.

It is an arithmetic number, because the mean of its divisors is an integer number (13122711).

Almost surely, 2^225140545 is an apocalyptic number.

It is an amenable number.

225140545 is a deficient number, since it is larger than the sum of its proper divisors (89804519).

225140545 is a wasteful number, since it uses less digits than its factorization.

225140545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 225140545 is about 15004.6841019730. The cubic root of 225140545 is about 608.3468136543.

The spelling of 225140545 in words is "two hundred twenty-five million, one hundred forty thousand, five hundred forty-five".