77674851725 has 36 divisors (see below), whose sum is σ = 103683873852. Its totient is φ = 57524659200.

The previous prime is 77674851703. The next prime is 77674851733. The reversal of 77674851725 is 52715847677.

It is a happy number.

It can be written as a sum of positive squares in 18 ways, for example, as 64421546596 + 13253305129 = 253814^2 + 115123^2 .

It is not a de Polignac number, because 77674851725 - 2⁸ = 77674851469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1556867 + ... + 1605983.

It is an arithmetic number, because the mean of its divisors is an integer number (2880107607).

Almost surely, 2^77674851725 is an apocalyptic number.

It is an amenable number.

77674851725 is a deficient number, since it is larger than the sum of its proper divisors (26009022127).

77674851725 is a wasteful number, since it uses less digits than its factorization.

77674851725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49266 (or 49200 counting only the distinct ones).

The product of its digits is 23049600, while the sum is 59.

The spelling of 77674851725 in words is "seventy-seven billion, six hundred seventy-four million, eight hundred fifty-one thousand, seven hundred twenty-five".