125499897 has 12 divisors (see below), whose sum is σ = 181374804. Its totient is φ = 83621760.

The previous prime is 125499887. The next prime is 125499923. The reversal of 125499897 is 798994521.

125499897 is a `hidden beast` number, since 1 + 2 + 549 + 9 + 8 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59305401 + 66194496 = 7701^2 + 8136^2 .

It is not a de Polignac number, because 125499897 - 2⁶ = 125499833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125499827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30397 + ... + 34277.

It is an arithmetic number, because the mean of its divisors is an integer number (15114567).

Almost surely, 2^125499897 is an apocalyptic number.

It is an amenable number.

125499897 is a deficient number, since it is larger than the sum of its proper divisors (55874907).

125499897 is a wasteful number, since it uses less digits than its factorization.

125499897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7480 (or 7477 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 125499897 is about 11202.6736540881. The cubic root of 125499897 is about 500.6656427795.

The spelling of 125499897 in words is "one hundred twenty-five million, four hundred ninety-nine thousand, eight hundred ninety-seven".