1522206725 has 12 divisors (see below), whose sum is σ = 2032731876. Its totient is φ = 1124090880.

The previous prime is 1522206683. The next prime is 1522206727. The reversal of 1522206725 is 5276022251.

It can be written as a sum of positive squares in 6 ways, for example, as 265787809 + 1256418916 = 16303^2 + 35446^2 .

It is not a de Polignac number, because 1522206725 - 2²² = 1518012421 is a prime.

It is a super-2 number, since 2×1522206725² = 4634226627270451250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1522206691 and 1522206700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1522206727) by changing a digit.

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, 2341532 + ... + 2342181.

It is an arithmetic number, because the mean of its divisors is an integer number (169394323).

Almost surely, 2^1522206725 is an apocalyptic number.

It is an amenable number.

1522206725 is a deficient number, since it is larger than the sum of its proper divisors (510525151).

1522206725 is a wasteful number, since it uses less digits than its factorization.

1522206725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4683736 (or 4683731 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1522206725 is about 39015.4677660028. The cubic root of 1522206725 is about 1150.3355605518.

Adding to 1522206725 its reverse (5276022251), we get a palindrome (6798228976).

The spelling of 1522206725 in words is "one billion, five hundred twenty-two million, two hundred six thousand, seven hundred twenty-five".