3125697620 has 12 divisors (see below), whose sum is σ = 6563965044. Its totient is φ = 1250279040.

The previous prime is 3125697613. The next prime is 3125697629. The reversal of 3125697620 is 267965213.

3125697620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2022660676 + 1103036944 = 44974^2 + 33212^2 .

It is a super-2 number, since 2×3125697620² = 19539971223347328800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125697629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78142421 + ... + 78142460.

It is an arithmetic number, because the mean of its divisors is an integer number (546997087).

Almost surely, 2^3125697620 is an apocalyptic number.

It is an amenable number.

3125697620 is an abundant number, since it is smaller than the sum of its proper divisors (3438267424).

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

3125697620 is a wasteful number, since it uses less digits than its factorization.

3125697620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156284890 (or 156284888 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 3125697620 is about 55907.9387922681. The cubic root of 3125697620 is about 1462.1176531855.

The spelling of 3125697620 in words is "three billion, one hundred twenty-five million, six hundred ninety-seven thousand, six hundred twenty".