125455515001240 has 32 divisors (see below), whose sum is σ = 282276850729680. Its totient is φ = 50181860760192.

The previous prime is 125455515001237. The next prime is 125455515001247. The reversal of 125455515001240 is 42100515554521.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 125455515001193 and 125455515001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125455515001247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4861707 + ... + 16569466.

Almost surely, 2^{125455515001240} is an apocalyptic number.

125455515001240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125455515001240 is an abundant number, since it is smaller than the sum of its proper divisors (156821335728440).

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

125455515001240 is a wasteful number, since it uses less digits than its factorization.

125455515001240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21577531 (or 21577527 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 40.

The spelling of 125455515001240 in words is "one hundred twenty-five trillion, four hundred fifty-five billion, five hundred fifteen million, one thousand, two hundred forty".