125401849 has 4 divisors (see below), whose sum is σ = 125432064. Its totient is φ = 125371636.

The previous prime is 125401847. The next prime is 125401853. The reversal of 125401849 is 948104521.

It is a happy number.

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 125401849 - 2¹ = 125401847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125401847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7657 + ... + 17590.

It is an arithmetic number, because the mean of its divisors is an integer number (31358016).

Almost surely, 2^125401849 is an apocalyptic number.

It is an amenable number.

125401849 is a deficient number, since it is larger than the sum of its proper divisors (30215).

125401849 is an equidigital number, since it uses as much as digits as its factorization.

125401849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30214.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 125401849 is about 11198.2967008380. The cubic root of 125401849 is about 500.5352255295.

The spelling of 125401849 in words is "one hundred twenty-five million, four hundred one thousand, eight hundred forty-nine".