45125601421 has 4 divisors (see below), whose sum is σ = 45761173344. Its totient is φ = 44490029500.

The previous prime is 45125601403. The next prime is 45125601439. The reversal of 45125601421 is 12410652154.

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 an interprime number because it is at equal distance from previous prime (45125601403) and next prime (45125601439).

It is a cyclic number.

It is not a de Polignac number, because 45125601421 - 2¹¹ = 45125599373 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 (45125601401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317785855 + ... + 317785996.

It is an arithmetic number, because the mean of its divisors is an integer number (11440293336).

Almost surely, 2^45125601421 is an apocalyptic number.

It is an amenable number.

45125601421 is a deficient number, since it is larger than the sum of its proper divisors (635571923).

45125601421 is an equidigital number, since it uses as much as digits as its factorization.

45125601421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635571922.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 45125601421 in words is "forty-five billion, one hundred twenty-five million, six hundred one thousand, four hundred twenty-one".