2516525021 has 8 divisors (see below), whose sum is σ = 2537697600. Its totient is φ = 2495431840.

The previous prime is 2516525009. The next prime is 2516525023. The reversal of 2516525021 is 1205256152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2516525021 - 2⁶ = 2516524957 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 (2516525023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44681 + ... + 83841.

It is an arithmetic number, because the mean of its divisors is an integer number (317212200).

Almost surely, 2^2516525021 is an apocalyptic number.

It is an amenable number.

2516525021 is a deficient number, since it is larger than the sum of its proper divisors (21172579).

2516525021 is a wasteful number, since it uses less digits than its factorization.

2516525021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39699.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 2516525021 is about 50164.9780324880. The cubic root of 2516525021 is about 1360.1926307666.

The spelling of 2516525021 in words is "two billion, five hundred sixteen million, five hundred twenty-five thousand, twenty-one".