3551547548025 has 45 divisors (see below), whose sum is σ = 6578850846271. Its totient is φ = 1894113462960.

The previous prime is 3551547548023. The next prime is 3551547548039. The reversal of 3551547548025 is 5208457451553.

The square root of 3551547548025 is 1884555.

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

3551547548025 is a `hidden beast` number, since 3 + 5 + 5 + 154 + 7 + 5 + 480 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1278557117289 + 2272990430736 = 1130733^2 + 1507644^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 3551547548025 - 2¹ = 3551547548023 is a prime.

It is a super-2 number, since 2×3551547548025² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3551547548023) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 84784036 + ... + 84825914.

Almost surely, 2^{3551547548025} is an apocalyptic number.

3551547548025 is the 1884555-th square number.

3551547548025 is the 942278-th centered octagonal number.

It is an amenable number.

3551547548025 is a deficient number, since it is larger than the sum of its proper divisors (3027303298246).

3551547548025 is an frugal number, since it uses more digits than its factorization.

3551547548025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83780 (or 41887 counting only the distinct ones).

The product of its (nonzero) digits is 16800000, while the sum is 54.

The spelling of 3551547548025 in words is "three trillion, five hundred fifty-one billion, five hundred forty-seven million, five hundred forty-eight thousand, twenty-five".