1049569515225 has 243 divisors, whose sum is σ = 2406404769951. Its totient is φ = 435692980800.

The previous prime is 1049569515223. The next prime is 1049569515227. The reversal of 1049569515225 is 5225159659401.

The square root of 1049569515225 is 1024485.

It is a perfect power (a square), and thus also a powerful number.

1049569515225 is a `hidden beast` number, since 1 + 0 + 4 + 9 + 5 + 69 + 51 + 522 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1049569515223) and next prime (1049569515227).

It can be written as a sum of positive squares in only one way, i.e., 377845025481 + 671724489744 = 614691^2 + 819588^2 .

It is not a de Polignac number, because 1049569515225 - 2¹ = 1049569515223 is a prime.

It is a super-2 number, since 2×1049569515225² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1049569515223) by changing a digit.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 1183279732 + ... + 1183280618.

Almost surely, 2^{1049569515225} is an apocalyptic number.

1049569515225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1049569515225 is the 1024485-th square number.

1049569515225 is the 512243-rd centered octagonal number.

It is an amenable number.

1049569515225 is an abundant number, since it is smaller than the sum of its proper divisors (1356835254726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1049569515225 is an equidigital number, since it uses as much as digits as its factorization.

1049569515225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826 (or 913 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 1049569515225 in words is "one trillion, forty-nine billion, five hundred sixty-nine million, five hundred fifteen thousand, two hundred twenty-five".