2782773625 has 16 divisors (see below), whose sum is σ = 3475953936. Its totient is φ = 2224262400.

The previous prime is 2782773599. The next prime is 2782773659. The reversal of 2782773625 is 5263772872.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2437594384 + 345179241 = 49372^2 + 18579^2 .

It is not a de Polignac number, because 2782773625 - 2²³ = 2774385017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142449 + ... + 160801.

It is an arithmetic number, because the mean of its divisors is an integer number (217247121).

Almost surely, 2^2782773625 is an apocalyptic number.

2782773625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2782773625 is a deficient number, since it is larger than the sum of its proper divisors (693180311).

2782773625 is a wasteful number, since it uses less digits than its factorization.

2782773625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19581 (or 19571 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 49.

The square root of 2782773625 is about 52752.0011468759. The cubic root of 2782773625 is about 1406.5633362687.

The spelling of 2782773625 in words is "two billion, seven hundred eighty-two million, seven hundred seventy-three thousand, six hundred twenty-five".