125451101 has 4 divisors (see below), whose sum is σ = 125484252. Its totient is φ = 125417952.

The previous prime is 125451089. The next prime is 125451113. The reversal of 125451101 is 101154521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101154521 = 13 ⋅7781117.

It is an interprime number because it is at equal distance from previous prime (125451089) and next prime (125451113).

It can be written as a sum of positive squares in 2 ways, for example, as 93799225 + 31651876 = 9685^2 + 5626^2 .

It is a cyclic number.

It is not a de Polignac number, because 125451101 - 2¹⁰ = 125450077 is a prime.

It is a super-2 number, since 2×125451101² = 31475957484224402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125451181) 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, 10040 + ... + 18753.

It is an arithmetic number, because the mean of its divisors is an integer number (31371063).

Almost surely, 2^125451101 is an apocalyptic number.

It is an amenable number.

125451101 is a deficient number, since it is larger than the sum of its proper divisors (33151).

125451101 is an equidigital number, since it uses as much as digits as its factorization.

125451101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33150.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 125451101 is about 11200.4955693933. The cubic root of 125451101 is about 500.6007459196.

The spelling of 125451101 in words is "one hundred twenty-five million, four hundred fifty-one thousand, one hundred one".