3525621025 has 12 divisors (see below), whose sum is σ = 4390867900. Its totient is φ = 2808175680.

The previous prime is 3525620999. The next prime is 3525621101. The reversal of 3525621025 is 5201265253.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 461777121 + 3063843904 = 21489^2 + 55352^2 .

It is not a de Polignac number, because 3525621025 - 2⁵ = 3525620993 is a prime.

It is a super-2 number, since 2×3525621025² = 24860007223844101250, which contains 22 as substring.

It is an unprimeable number.

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, 302190 + ... + 313639.

Almost surely, 2^3525621025 is an apocalyptic number.

It is an amenable number.

3525621025 is a deficient number, since it is larger than the sum of its proper divisors (865246875).

3525621025 is a wasteful number, since it uses less digits than its factorization.

3525621025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616068 (or 616063 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 3525621025 is about 59376.9401788270. The cubic root of 3525621025 is about 1521.9902692425.

Adding to 3525621025 its reverse (5201265253), we get a palindrome (8726886278).

The spelling of 3525621025 in words is "three billion, five hundred twenty-five million, six hundred twenty-one thousand, twenty-five".