140778777925 has 12 divisors (see below), whose sum is σ = 174650777860. Its totient is φ = 112568123520.

The previous prime is 140778777851. The next prime is 140778777929. The reversal of 140778777925 is 529777877041.

It can be written as a sum of positive squares in 6 ways, for example, as 2847503044 + 137931274881 = 53362^2 + 371391^2 .

It is not a de Polignac number, because 140778777925 - 2⁹ = 140778777413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140778777929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1320120 + ... + 1422769.

Almost surely, 2^140778777925 is an apocalyptic number.

It is an amenable number.

140778777925 is a deficient number, since it is larger than the sum of its proper divisors (33871999935).

140778777925 is a wasteful number, since it uses less digits than its factorization.

140778777925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744952 (or 2744947 counting only the distinct ones).

The product of its (nonzero) digits is 48404160, while the sum is 64.

The spelling of 140778777925 in words is "one hundred forty billion, seven hundred seventy-eight million, seven hundred seventy-seven thousand, nine hundred twenty-five".