125087690 has 96 divisors (see below), whose sum is σ = 286992720. Its totient is φ = 38900736.

The previous prime is 125087687. The next prime is 125087693. The reversal of 125087690 is 96780521.

It is an interprime number because it is at equal distance from previous prime (125087687) and next prime (125087693).

It can be written as a sum of positive squares in 8 ways, for example, as 10233601 + 114854089 = 3199^2 + 10717^2 .

It is a super-2 number, since 2×125087690² = 31293860379072200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125087693) 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 47 ways as a sum of consecutive naturals, for example, 464876 + ... + 465144.

Almost surely, 2^125087690 is an apocalyptic number.

125087690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125087690 is an abundant number, since it is smaller than the sum of its proper divisors (161905030).

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

125087690 is a wasteful number, since it uses less digits than its factorization.

125087690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 125087690 is about 11184.2608159860. The cubic root of 125087690 is about 500.1168926701.

The spelling of 125087690 in words is "one hundred twenty-five million, eighty-seven thousand, six hundred ninety".