225145490649 has 32 divisors (see below), whose sum is σ = 308383680000. Its totient is φ = 146030556672.

The previous prime is 225145490641. The next prime is 225145490741. The reversal of 225145490649 is 946094541522.

It is not a de Polignac number, because 225145490649 - 2³ = 225145490641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225145490641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55906974 + ... + 55911000.

It is an arithmetic number, because the mean of its divisors is an integer number (9636990000).

Almost surely, 2^225145490649 is an apocalyptic number.

It is an amenable number.

225145490649 is a deficient number, since it is larger than the sum of its proper divisors (83238189351).

225145490649 is a wasteful number, since it uses less digits than its factorization.

225145490649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669.

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 225145490649 in words is "two hundred twenty-five billion, one hundred forty-five million, four hundred ninety thousand, six hundred forty-nine".