2061777825 has 72 divisors (see below), whose sum is σ = 3817963968. Its totient is φ = 1062771840.

The previous prime is 2061777821. The next prime is 2061777829. The reversal of 2061777825 is 5287771602.

2061777825 is a `hidden beast` number, since 2 + 0 + 617 + 7 + 7 + 8 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (2061777821) and next prime (2061777829).

It is not a de Polignac number, because 2061777825 - 2² = 2061777821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2061777821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1389534 + ... + 1391016.

Almost surely, 2^2061777825 is an apocalyptic number.

2061777825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2061777825 is a deficient number, since it is larger than the sum of its proper divisors (1756186143).

2061777825 is a wasteful number, since it uses less digits than its factorization.

2061777825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703 (or 1695 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 2061777825 is about 45406.8037302781. The cubic root of 2061777825 is about 1272.7622570895.

It can be divided in two parts, 2061777 and 825, that added together give a palindrome (2062602).

The spelling of 2061777825 in words is "two billion, sixty-one million, seven hundred seventy-seven thousand, eight hundred twenty-five".