125447099 has 4 divisors (see below), whose sum is σ = 126665136. Its totient is φ = 124229064.

The previous prime is 125447087. The next prime is 125447107. The reversal of 125447099 is 990744521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125447099 - 2⁸ = 125446843 is a prime.

It is a super-3 number, since 3×125447099³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125447059) 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, 608864 + ... + 609069.

It is an arithmetic number, because the mean of its divisors is an integer number (31666284).

Almost surely, 2^125447099 is an apocalyptic number.

125447099 is a deficient number, since it is larger than the sum of its proper divisors (1218037).

125447099 is a wasteful number, since it uses less digits than its factorization.

125447099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218036.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 125447099 is about 11200.3169151591. The cubic root of 125447099 is about 500.5954226622.

It can be divided in two parts, 1254 and 47099, that multiplied together give a triangular number (59062146 = T₁₀₈₆₈).

The spelling of 125447099 in words is "one hundred twenty-five million, four hundred forty-seven thousand, ninety-nine".