3125985557 has 16 divisors (see below), whose sum is σ = 3231325440. Its totient is φ = 3022451712.

The previous prime is 3125985553. The next prime is 3125985563. The reversal of 3125985557 is 7555895213.

It is a cyclic number.

It is not a de Polignac number, because 3125985557 - 2² = 3125985553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125985553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2012093 + ... + 2013645.

It is an arithmetic number, because the mean of its divisors is an integer number (201957840).

Almost surely, 2^3125985557 is an apocalyptic number.

It is an amenable number.

3125985557 is a deficient number, since it is larger than the sum of its proper divisors (105339883).

3125985557 is a wasteful number, since it uses less digits than its factorization.

3125985557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092.

The product of its digits is 1890000, while the sum is 50.

The square root of 3125985557 is about 55910.5138323732. The cubic root of 3125985557 is about 1462.1625482132.

The spelling of 3125985557 in words is "three billion, one hundred twenty-five million, nine hundred eighty-five thousand, five hundred fifty-seven".