1445225100 has 72 divisors (see below), whose sum is σ = 4561666368. Its totient is φ = 350356800.

The previous prime is 1445225099. The next prime is 1445225107. The reversal of 1445225100 is 15225441.

It is not an unprimeable number, because it can be changed into a prime (1445225107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215674 + ... + 222273.

Almost surely, 2^1445225100 is an apocalyptic number.

1445225100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445225100 is an abundant number, since it is smaller than the sum of its proper divisors (3116441268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445225100 is a wasteful number, since it uses less digits than its factorization.

1445225100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437975 (or 437968 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1445225100 is about 38016.1163192665. The cubic root of 1445225100 is about 1130.6074213588.

The spelling of 1445225100 in words is "one billion, four hundred forty-five million, two hundred twenty-five thousand, one hundred".