125015890 has 8 divisors (see below), whose sum is σ = 225028620. Its totient is φ = 50006352.

The previous prime is 125015887. The next prime is 125015893. The reversal of 125015890 is 98510521.

It is an interprime number because it is at equal distance from previous prime (125015887) and next prime (125015893).

It can be written as a sum of positive squares in 2 ways, for example, as 121815369 + 3200521 = 11037^2 + 1789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (125015893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6250785 + ... + 6250804.

Almost surely, 2^125015890 is an apocalyptic number.

125015890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125015890 is a deficient number, since it is larger than the sum of its proper divisors (100012730).

125015890 is a wasteful number, since it uses less digits than its factorization.

125015890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12501596.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 125015890 is about 11181.0504873201. The cubic root of 125015890 is about 500.0211857690.

The spelling of 125015890 in words is "one hundred twenty-five million, fifteen thousand, eight hundred ninety".