1445623425 has 18 divisors (see below), whose sum is σ = 2589272582. Its totient is φ = 770999040.

The previous prime is 1445623409. The next prime is 1445623427. The reversal of 1445623425 is 5243265441.

1445623425 is a `hidden beast` number, since 1 + 4 + 4 + 5 + 623 + 4 + 25 = 666.

1445623425 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3370896 + 1442252529 = 1836^2 + 37977^2 .

It is not a de Polignac number, because 1445623425 - 2⁴ = 1445623409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445623425.

It is not an unprimeable number, because it can be changed into a prime (1445623427) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3212272 + ... + 3212721.

Almost surely, 2^1445623425 is an apocalyptic number.

1445623425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1445623425 is a deficient number, since it is larger than the sum of its proper divisors (1143649157).

1445623425 is a wasteful number, since it uses less digits than its factorization.

1445623425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6425009 (or 6425001 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 1445623425 is about 38021.3548548707. The cubic root of 1445623425 is about 1130.7112824189.

Adding to 1445623425 its reverse (5243265441), we get a palindrome (6688888866).

The spelling of 1445623425 in words is "one billion, four hundred forty-five million, six hundred twenty-three thousand, four hundred twenty-five".