125025281000 has 32 divisors (see below), whose sum is σ = 292559159880. Its totient is φ = 50010112000.

The previous prime is 125025280987. The next prime is 125025281041. The reversal of 125025281000 is 182520521.

It can be written as a sum of positive squares in 4 ways, for example, as 50634900484 + 74390380516 = 225022^2 + 272746^2 .

It is a super-2 number, since 2×125025281000² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62511641 + ... + 62513640.

Almost surely, 2^125025281000 is an apocalyptic number.

125025281000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125025281000 is an abundant number, since it is smaller than the sum of its proper divisors (167533878880).

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

125025281000 is a wasteful number, since it uses less digits than its factorization.

125025281000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125025302 (or 125025288 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 125025281000 in words is "one hundred twenty-five billion, twenty-five million, two hundred eighty-one thousand".