125253257640 has 128 divisors (see below), whose sum is σ = 429585672960. Its totient is φ = 28619587584.

The previous prime is 125253257639. The next prime is 125253257641. The reversal of 125253257640 is 46752352521.

It is an interprime number because it is at equal distance from previous prime (125253257639) and next prime (125253257641).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 125253257592 and 125253257601.

It is not an unprimeable number, because it can be changed into a prime (125253257641) 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 31 ways as a sum of consecutive naturals, for example, 2611314 + ... + 2658846.

It is an arithmetic number, because the mean of its divisors is an integer number (3356138070).

Almost surely, 2^125253257640 is an apocalyptic number.

125253257640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125253257640 is an abundant number, since it is smaller than the sum of its proper divisors (304332415320).

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

125253257640 is a wasteful number, since it uses less digits than its factorization.

125253257640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50691 (or 50687 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 125253257640 in words is "one hundred twenty-five billion, two hundred fifty-three million, two hundred fifty-seven thousand, six hundred forty".