2045021125501 has 4 divisors (see below), whose sum is σ = 2045394923904. Its totient is φ = 2044647327100.

The previous prime is 2045021125489. The next prime is 2045021125513. The reversal of 2045021125501 is 1055211205402.

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 (2045021125489) and next prime (2045021125513).

It is a cyclic number.

It is not a de Polignac number, because 2045021125501 - 2⁷ = 2045021125373 is a prime.

It is a super-2 number, since 2×2045021125501² (a number of 25 digits) contains 22 as substring.

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 2045021125501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045021125541) 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, 186890995 + ... + 186901936.

It is an arithmetic number, because the mean of its divisors is an integer number (511348730976).

Almost surely, 2^{2045021125501} is an apocalyptic number.

It is an amenable number.

2045021125501 is a deficient number, since it is larger than the sum of its proper divisors (373798403).

2045021125501 is an equidigital number, since it uses as much as digits as its factorization.

2045021125501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373798402.

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 2045021125501 in words is "two trillion, forty-five billion, twenty-one million, one hundred twenty-five thousand, five hundred one".