3125221325 has 6 divisors (see below), whose sum is σ = 3875274474. Its totient is φ = 2500177040.

The previous prime is 3125221313. The next prime is 3125221349. The reversal of 3125221325 is 5231225213.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 954686404 + 2170534921 = 30898^2 + 46589^2 .

It is not a de Polignac number, because 3125221325 - 2⁶ = 3125221261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3125221294 and 3125221303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62504402 + ... + 62504451.

It is an arithmetic number, because the mean of its divisors is an integer number (645879079).

Almost surely, 2^3125221325 is an apocalyptic number.

It is an amenable number.

3125221325 is a deficient number, since it is larger than the sum of its proper divisors (750053149).

3125221325 is a wasteful number, since it uses less digits than its factorization.

3125221325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125008863 (or 125008858 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 3125221325 is about 55903.6789934258. The cubic root of 3125221325 is about 1462.0433833970.

Adding to 3125221325 its reverse (5231225213), we get a palindrome (8356446538).

The spelling of 3125221325 in words is "three billion, one hundred twenty-five million, two hundred twenty-one thousand, three hundred twenty-five".