2501890545 has 64 divisors (see below), whose sum is σ = 5061242880. Its totient is φ = 1025068800.

The previous prime is 2501890499. The next prime is 2501890553. The reversal of 2501890545 is 5450981052.

It is not a de Polignac number, because 2501890545 - 2¹⁰ = 2501889521 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66751 + ... + 97259.

It is an arithmetic number, because the mean of its divisors is an integer number (79081920).

Almost surely, 2^2501890545 is an apocalyptic number.

It is an amenable number.

2501890545 is an abundant number, since it is smaller than the sum of its proper divisors (2559352335).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2501890545 is a wasteful number, since it uses less digits than its factorization.

2501890545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30606.

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 2501890545 is about 50018.9018771904. The cubic root of 2501890545 is about 1357.5508373393.

The spelling of 2501890545 in words is "two billion, five hundred one million, eight hundred ninety thousand, five hundred forty-five".