2125581550 has 24 divisors (see below), whose sum is σ = 4060438776. Its totient is φ = 827252640.

The previous prime is 2125581541. The next prime is 2125581551. The reversal of 2125581550 is 551855212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125581551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572632 + ... + 576331.

It is an arithmetic number, because the mean of its divisors is an integer number (169184949).

Almost surely, 2^2125581550 is an apocalyptic number.

2125581550 is a deficient number, since it is larger than the sum of its proper divisors (1934857226).

2125581550 is a wasteful number, since it uses less digits than its factorization.

2125581550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149012 (or 1149007 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 34.

The square root of 2125581550 is about 46104.0296503462. The cubic root of 2125581550 is about 1285.7580653229.

The spelling of 2125581550 in words is "two billion, one hundred twenty-five million, five hundred eighty-one thousand, five hundred fifty".