2155025450 has 24 divisors (see below), whose sum is σ = 4137651840. Its totient is φ = 834202800.

The previous prime is 2155025449. The next prime is 2155025459. The reversal of 2155025450 is 545205512.

It is not an unprimeable number, because it can be changed into a prime (2155025459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 693620 + ... + 696719.

It is an arithmetic number, because the mean of its divisors is an integer number (172402160).

Almost surely, 2^2155025450 is an apocalyptic number.

2155025450 is a deficient number, since it is larger than the sum of its proper divisors (1982626390).

2155025450 is a wasteful number, since it uses less digits than its factorization.

2155025450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390382 (or 1390377 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 2155025450 is about 46422.2516687849. The cubic root of 2155025450 is about 1291.6677046587.

The spelling of 2155025450 in words is "two billion, one hundred fifty-five million, twenty-five thousand, four hundred fifty".