125001949 has 4 divisors (see below), whose sum is σ = 125443936. Its totient is φ = 124559964.

The previous prime is 125001923. The next prime is 125001959. The reversal of 125001949 is 949100521.

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 125001949 - 2⁵ = 125001917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125001949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125001959) 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, 220569 + ... + 221134.

It is an arithmetic number, because the mean of its divisors is an integer number (31360984).

Almost surely, 2^125001949 is an apocalyptic number.

It is an amenable number.

125001949 is a deficient number, since it is larger than the sum of its proper divisors (441987).

125001949 is an equidigital number, since it uses as much as digits as its factorization.

125001949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441986.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 125001949 is about 11180.4270490890. The cubic root of 125001949 is about 500.0025986532.

The spelling of 125001949 in words is "one hundred twenty-five million, one thousand, nine hundred forty-nine".