3551111025 has 72 divisors (see below), whose sum is σ = 7375486272. Its totient is φ = 1475760000.

The previous prime is 3551111023. The next prime is 3551111029. The reversal of 3551111025 is 5201111553.

It is not a de Polignac number, because 3551111025 - 2¹ = 3551111023 is a prime.

It is a super-2 number, since 2×3551111025² = 25220779023753101250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3551110986 and 3551111004.

It is not an unprimeable number, because it can be changed into a prime (3551111023) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 35575 + ... + 91475.

Almost surely, 2^3551111025 is an apocalyptic number.

3551111025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3551111025 is an abundant number, since it is smaller than the sum of its proper divisors (3824375247).

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

3551111025 is a wasteful number, since it uses less digits than its factorization.

3551111025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55943 (or 55927 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 3551111025 is about 59591.1992243821. The cubic root of 3551111025 is about 1525.6494268846.

Adding to 3551111025 its reverse (5201111553), we get a palindrome (8752222578).

The spelling of 3551111025 in words is "three billion, five hundred fifty-one million, one hundred eleven thousand, twenty-five".