125455681 has 8 divisors (see below), whose sum is σ = 136370304. Its totient is φ = 114721680.

The previous prime is 125455669. The next prime is 125455697. The reversal of 125455681 is 186554521.

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

It is a cyclic number.

It is not a de Polignac number, because 125455681 - 2²³ = 117067073 is a prime.

It is a super-2 number, since 2×125455681² = 31478255790347522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125455681.

It is not an unprimeable number, because it can be changed into a prime (125455661) 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, 43705 + ... + 46486.

It is an arithmetic number, because the mean of its divisors is an integer number (17046288).

Almost surely, 2^125455681 is an apocalyptic number.

It is an amenable number.

125455681 is a deficient number, since it is larger than the sum of its proper divisors (10914623).

125455681 is a wasteful number, since it uses less digits than its factorization.

125455681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90311.

The product of its digits is 48000, while the sum is 37.

The square root of 125455681 is about 11200.7000227664. The cubic root of 125455681 is about 500.6068378643.

The spelling of 125455681 in words is "one hundred twenty-five million, four hundred fifty-five thousand, six hundred eighty-one".