125904001 has 4 divisors (see below), whose sum is σ = 131378112. Its totient is φ = 120429892.

The previous prime is 125903983. The next prime is 125904019. The reversal of 125904001 is 100409521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100409521 = 197 ⋅509693.

It is an interprime number because it is at equal distance from previous prime (125903983) and next prime (125904019).

It is a cyclic number.

It is not a de Polignac number, because 125904001 - 2¹⁷ = 125772929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125904101) 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, 2737021 + ... + 2737066.

It is an arithmetic number, because the mean of its divisors is an integer number (32844528).

Almost surely, 2^125904001 is an apocalyptic number.

It is an amenable number.

125904001 is a deficient number, since it is larger than the sum of its proper divisors (5474111).

125904001 is an equidigital number, since it uses as much as digits as its factorization.

125904001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474110.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 125904001 is about 11220.6952101909. The cubic root of 125904001 is about 501.2024406217.

The spelling of 125904001 in words is "one hundred twenty-five million, nine hundred four thousand, one".