3511421025 has 24 divisors (see below), whose sum is σ = 6634914624. Its totient is φ = 1605220800.

The previous prime is 3511421021. The next prime is 3511421083. The reversal of 3511421025 is 5201241153.

It is a happy number.

It is not a de Polignac number, because 3511421025 - 2² = 3511421021 is a prime.

It is a super-2 number, since 2×3511421025² = 24660155229624101250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3511420986 and 3511421004.

It is not an unprimeable number, because it can be changed into a prime (3511421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3343686 + ... + 3344735.

It is an arithmetic number, because the mean of its divisors is an integer number (276454776).

Almost surely, 2^3511421025 is an apocalyptic number.

3511421025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3511421025 is a deficient number, since it is larger than the sum of its proper divisors (3123493599).

3511421025 is a wasteful number, since it uses less digits than its factorization.

3511421025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6688441 (or 6688436 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 3511421025 is about 59257.2444938170. The cubic root of 3511421025 is about 1519.9441670685.

Adding to 3511421025 its reverse (5201241153), we get a palindrome (8712662178).

The spelling of 3511421025 in words is "three billion, five hundred eleven million, four hundred twenty-one thousand, twenty-five".