3145205525 has 24 divisors (see below), whose sum is σ = 4862409024. Its totient is φ = 1960646400.

The previous prime is 3145205521. The next prime is 3145205551. The reversal of 3145205525 is 5255025413.

3145205525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3145205525 - 2² = 3145205521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3145205491 and 3145205500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145205521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 815012 + ... + 818861.

It is an arithmetic number, because the mean of its divisors is an integer number (202600376).

Almost surely, 2^3145205525 is an apocalyptic number.

3145205525 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3145205525 is a deficient number, since it is larger than the sum of its proper divisors (1717203499).

3145205525 is a wasteful number, since it uses less digits than its factorization.

3145205525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633901 (or 1633896 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 3145205525 is about 56082.1319584054. The cubic root of 3145205525 is about 1465.1531055647.

The spelling of 3145205525 in words is "three billion, one hundred forty-five million, two hundred five thousand, five hundred twenty-five".