125778144 has 24 divisors (see below), whose sum is σ = 330167880. Its totient is φ = 41926016.

The previous prime is 125778137. The next prime is 125778151. The reversal of 125778144 is 441877521.

It is an interprime number because it is at equal distance from previous prime (125778137) and next prime (125778151).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654999 + ... + 655190.

It is an arithmetic number, because the mean of its divisors is an integer number (13756995).

Almost surely, 2^125778144 is an apocalyptic number.

It is an amenable number.

125778144 is an abundant number, since it is smaller than the sum of its proper divisors (204389736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125778144 is a wasteful number, since it uses less digits than its factorization.

125778144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310202 (or 1310194 counting only the distinct ones).

The product of its digits is 62720, while the sum is 39.

The square root of 125778144 is about 11215.0855547339. The cubic root of 125778144 is about 501.0353798306.

It can be divided in two parts, 1257 and 78144, that added together give a triangular number (79401 = T₃₉₈).

The spelling of 125778144 in words is "one hundred twenty-five million, seven hundred seventy-eight thousand, one hundred forty-four".