1445252525 has 6 divisors (see below), whose sum is σ = 1792113162. Its totient is φ = 1156202000.

The previous prime is 1445252509. The next prime is 1445252527. The reversal of 1445252525 is 5252525441.

It can be written as a sum of positive squares in 3 ways, for example, as 2696164 + 1442556361 = 1642^2 + 37981^2 .

It is not a de Polignac number, because 1445252525 - 2⁴ = 1445252509 is a prime.

It is a super-2 number, since 2×1445252525² = 4177509722037751250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445252527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28905026 + ... + 28905075.

It is an arithmetic number, because the mean of its divisors is an integer number (298685527).

Almost surely, 2^1445252525 is an apocalyptic number.

It is an amenable number.

1445252525 is a deficient number, since it is larger than the sum of its proper divisors (346860637).

1445252525 is an equidigital number, since it uses as much as digits as its factorization.

1445252525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57810111 (or 57810106 counting only the distinct ones).

The product of its digits is 80000, while the sum is 35.

The square root of 1445252525 is about 38016.4770198397. The cubic root of 1445252525 is about 1130.6145728889.

Adding to 1445252525 its reverse (5252525441), we get a palindrome (6697777966).

The spelling of 1445252525 in words is "one billion, four hundred forty-five million, two hundred fifty-two thousand, five hundred twenty-five".