3587785281025 has 27 divisors (see below), whose sum is σ = 4890204380803. Its totient is φ = 2609222620400.

The previous prime is 3587785281007. The next prime is 3587785281097. The reversal of 3587785281025 is 5201825877853.

It is a happy number.

The square root of 3587785281025 is 1894145.

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

It can be written as a sum of positive squares in only one way, i.e., 1291602701169 + 2296182579856 = 1136487^2 + 1515316^2 .

It is not a de Polignac number, because 3587785281025 - 2¹³ = 3587785272833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 104160756 + ... + 104195194.

Almost surely, 2^{3587785281025} is an apocalyptic number.

3587785281025 is the 1894145-th square number.

3587785281025 is the 947073-rd centered octagonal number.

It is an amenable number.

3587785281025 is a deficient number, since it is larger than the sum of its proper divisors (1302419099778).

3587785281025 is an frugal number, since it uses more digits than its factorization.

3587785281025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68910 (or 34455 counting only the distinct ones).

The product of its (nonzero) digits is 37632000, while the sum is 61.

The spelling of 3587785281025 in words is "three trillion, five hundred eighty-seven billion, seven hundred eighty-five million, two hundred eighty-one thousand, twenty-five".