2521402501 has 12 divisors (see below), whose sum is σ = 2564193792. Its totient is φ = 2479078224.

The previous prime is 2521402493. The next prime is 2521402511. The reversal of 2521402501 is 1052041252.

It is not a de Polignac number, because 2521402501 - 2³ = 2521402493 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 (2521402511) 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 11 ways as a sum of consecutive naturals, for example, 7224475 + ... + 7224823.

It is an arithmetic number, because the mean of its divisors is an integer number (213682816).

Almost surely, 2^2521402501 is an apocalyptic number.

It is an amenable number.

2521402501 is a deficient number, since it is larger than the sum of its proper divisors (42791291).

2521402501 is an equidigital number, since it uses as much as digits as its factorization.

2521402501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2521402501 is about 50213.5688932782. The cubic root of 2521402501 is about 1361.0708299688.

Adding to 2521402501 its reverse (1052041252), we get a palindrome (3573443753).

The spelling of 2521402501 in words is "two billion, five hundred twenty-one million, four hundred two thousand, five hundred one".