1772245525 has 12 divisors (see below), whose sum is σ = 2198170692. Its totient is φ = 1417418240.

The previous prime is 1772245513. The next prime is 1772245549. The reversal of 1772245525 is 5255422771.

It can be written as a sum of positive squares in 6 ways, for example, as 226261764 + 1545983761 = 15042^2 + 39319^2 .

It is not a de Polignac number, because 1772245525 - 2¹¹ = 1772243477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121947 + ... + 135703.

It is an arithmetic number, because the mean of its divisors is an integer number (183180891).

Almost surely, 2^1772245525 is an apocalyptic number.

It is an amenable number.

1772245525 is a deficient number, since it is larger than the sum of its proper divisors (425925167).

1772245525 is a wasteful number, since it uses less digits than its factorization.

1772245525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18920 (or 18915 counting only the distinct ones).

The product of its digits is 196000, while the sum is 40.

The square root of 1772245525 is about 42098.0465698826. The cubic root of 1772245525 is about 1210.1558265266.

The spelling of 1772245525 in words is "one billion, seven hundred seventy-two million, two hundred forty-five thousand, five hundred twenty-five".