2155001250 has 40 divisors (see below), whose sum is σ = 5385788496. Its totient is φ = 574666000.

The previous prime is 2155001237. The next prime is 2155001257. The reversal of 2155001250 is 521005512.

It is not an unprimeable number, because it can be changed into a prime (2155001257) 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 19 ways as a sum of consecutive naturals, for example, 283584 + ... + 291083.

Almost surely, 2^2155001250 is an apocalyptic number.

2155001250 is an abundant number, since it is smaller than the sum of its proper divisors (3230787246).

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

2155001250 is an equidigital number, since it uses as much as digits as its factorization.

2155001250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574692 (or 574677 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 2155001250 is about 46421.9910171893. The cubic root of 2155001250 is about 1291.6628696848.

Adding to 2155001250 its reverse (521005512), we get a palindrome (2676006762).

The spelling of 2155001250 in words is "two billion, one hundred fifty-five million, one thousand, two hundred fifty".