1525722543 has 12 divisors (see below), whose sum is σ = 2217343960. Its totient is φ = 1010907216.

The previous prime is 1525722533. The next prime is 1525722551. The reversal of 1525722543 is 3452275251.

1525722543 is a `hidden beast` number, since 1 + 525 + 72 + 25 + 43 = 666.

It is not a de Polignac number, because 1525722543 - 2¹⁴ = 1525706159 is a prime.

It is a super-4 number, since 4×1525722543⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1525722498 and 1525722507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525722533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 518548 + ... + 521481.

Almost surely, 2^1525722543 is an apocalyptic number.

1525722543 is a deficient number, since it is larger than the sum of its proper divisors (691621417).

1525722543 is a wasteful number, since it uses less digits than its factorization.

1525722543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040198 (or 1040195 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 1525722543 is about 39060.4984991231. The cubic root of 1525722543 is about 1151.2205171638.

Adding to 1525722543 its reverse (3452275251), we get a palindrome (4977997794).

The spelling of 1525722543 in words is "one billion, five hundred twenty-five million, seven hundred twenty-two thousand, five hundred forty-three".