125155440 has 60 divisors (see below), whose sum is σ = 420316104. Its totient is φ = 33374592.

The previous prime is 125155427. The next prime is 125155453. The reversal of 125155440 is 44551521.

It is an interprime number because it is at equal distance from previous prime (125155427) and next prime (125155453).

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86194 + ... + 87633.

Almost surely, 2^125155440 is an apocalyptic number.

125155440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125155440 is an abundant number, since it is smaller than the sum of its proper divisors (295160664).

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

125155440 is a wasteful number, since it uses less digits than its factorization.

125155440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173846 (or 173837 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 125155440 is about 11187.2892158914. The cubic root of 125155440 is about 500.2071674847.

It can be divided in two parts, 12515 and 5440, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 125155440 in words is "one hundred twenty-five million, one hundred fifty-five thousand, four hundred forty".