2625477561 has 48 divisors (see below), whose sum is σ = 4604870400. Its totient is φ = 1409353344.

The previous prime is 2625477553. The next prime is 2625477587. The reversal of 2625477561 is 1657745262.

2625477561 is a `hidden beast` number, since 26 + 25 + 47 + 7 + 561 = 666.

It is not a de Polignac number, because 2625477561 - 2³ = 2625477553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2625477461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48180 + ... + 87018.

It is an arithmetic number, because the mean of its divisors is an integer number (95934800).

Almost surely, 2^2625477561 is an apocalyptic number.

2625477561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2625477561 is a deficient number, since it is larger than the sum of its proper divisors (1979392839).

2625477561 is a wasteful number, since it uses less digits than its factorization.

2625477561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38918 (or 38915 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 2625477561 is about 51239.4141359950. The cubic root of 2625477561 is about 1379.5457373776.

The spelling of 2625477561 in words is "two billion, six hundred twenty-five million, four hundred seventy-seven thousand, five hundred sixty-one".