125878997 has 4 divisors (see below), whose sum is σ = 127757856. Its totient is φ = 124000140.

The previous prime is 125878993. The next prime is 125879041. The reversal of 125878997 is 799878521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125878997 - 2² = 125878993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125878993) 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, 939329 + ... + 939462.

It is an arithmetic number, because the mean of its divisors is an integer number (31939464).

Almost surely, 2^125878997 is an apocalyptic number.

It is an amenable number.

125878997 is a deficient number, since it is larger than the sum of its proper divisors (1878859).

125878997 is an equidigital number, since it uses as much as digits as its factorization.

125878997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878858.

The product of its digits is 2540160, while the sum is 56.

The square root of 125878997 is about 11219.5809636546. The cubic root of 125878997 is about 501.1692595329.

The spelling of 125878997 in words is "one hundred twenty-five million, eight hundred seventy-eight thousand, nine hundred ninety-seven".