125366187640 has 16 divisors (see below), whose sum is σ = 282073922280. Its totient is φ = 50146475040.

The previous prime is 125366187637. The next prime is 125366187647. The reversal of 125366187640 is 46781663521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125366187647) 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 3 ways as a sum of consecutive naturals, for example, 1567077306 + ... + 1567077385.

Almost surely, 2^125366187640 is an apocalyptic number.

125366187640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125366187640 is an abundant number, since it is smaller than the sum of its proper divisors (156707734640).

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

125366187640 is a wasteful number, since it uses less digits than its factorization.

125366187640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134154702 (or 3134154698 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 125366187640 in words is "one hundred twenty-five billion, three hundred sixty-six million, one hundred eighty-seven thousand, six hundred forty".