2125156570 has 16 divisors (see below), whose sum is σ = 4050298728. Its totient is φ = 800058880.

The previous prime is 2125156513. The next prime is 2125156571. The reversal of 2125156570 is 756515212.

It can be written as a sum of positive squares in 4 ways, for example, as 1868227729 + 256928841 = 43223^2 + 16029^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (2125156571) 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, 6250291 + ... + 6250630.

Almost surely, 2^2125156570 is an apocalyptic number.

2125156570 is a deficient number, since it is larger than the sum of its proper divisors (1925142158).

2125156570 is a wasteful number, since it uses less digits than its factorization.

2125156570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12500945.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 2125156570 is about 46099.4204952730. The cubic root of 2125156570 is about 1285.6723698916.

The spelling of 2125156570 in words is "two billion, one hundred twenty-five million, one hundred fifty-six thousand, five hundred seventy".