1445215825 has 12 divisors (see below), whose sum is σ = 1801456128. Its totient is φ = 1150115600.

The previous prime is 1445215823. The next prime is 1445215903. The reversal of 1445215825 is 5285125441.

It is not a de Polignac number, because 1445215825 - 2¹ = 1445215823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445215823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146557 + ... + 156106.

It is an arithmetic number, because the mean of its divisors is an integer number (150121344).

Almost surely, 2^1445215825 is an apocalyptic number.

It is an amenable number.

1445215825 is a deficient number, since it is larger than the sum of its proper divisors (356240303).

1445215825 is a wasteful number, since it uses less digits than its factorization.

1445215825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302864 (or 302859 counting only the distinct ones).

The product of its digits is 64000, while the sum is 37.

The square root of 1445215825 is about 38015.9943313338. The cubic root of 1445215825 is about 1130.6050027260.

The spelling of 1445215825 in words is "one billion, four hundred forty-five million, two hundred fifteen thousand, eight hundred twenty-five".