2501401987 has 8 divisors (see below), whose sum is σ = 2862080000. Its totient is φ = 2141557704.

The previous prime is 2501401949. The next prime is 2501401999. The reversal of 2501401987 is 7891041052.

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

It is a cyclic number.

It is not a de Polignac number, because 2501401987 - 2¹¹ = 2501399939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2501401387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201987 + ... + 214012.

It is an arithmetic number, because the mean of its divisors is an integer number (357760000).

Almost surely, 2^2501401987 is an apocalyptic number.

2501401987 is a deficient number, since it is larger than the sum of its proper divisors (360678013).

2501401987 is an equidigital number, since it uses as much as digits as its factorization.

2501401987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416865.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 2501401987 is about 50014.0179049834. The cubic root of 2501401987 is about 1357.4624661008.

The spelling of 2501401987 in words is "two billion, five hundred one million, four hundred one thousand, nine hundred eighty-seven".