2195657150625 has 135 divisors (see below), whose sum is σ = 4147741867269. Its totient is φ = 1118799396000.

The previous prime is 2195657150623. The next prime is 2195657150639. The reversal of 2195657150625 is 5260517565912.

The square root of 2195657150625 is 1481775.

It is a perfect power (a square), and thus also a powerful number.

2195657150625 is a `hidden beast` number, since 2 + 1 + 9 + 5 + 6 + 5 + 7 + 1 + 5 + 0 + 625 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 172139520609 + 2023517630016 = 414897^2 + 1422504^2 .

It is not a de Polignac number, because 2195657150625 - 2¹ = 2195657150623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2195657150623) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 2556061446 + ... + 2556062304.

Almost surely, 2^{2195657150625} is an apocalyptic number.

2195657150625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2195657150625 is the 1481775-th square number.

2195657150625 is the 740888-th centered octagonal number.

It is an amenable number.

2195657150625 is a deficient number, since it is larger than the sum of its proper divisors (1952084716644).

2195657150625 is an frugal number, since it uses more digits than its factorization.

2195657150625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 5670000, while the sum is 54.

The spelling of 2195657150625 in words is "two trillion, one hundred ninety-five billion, six hundred fifty-seven million, one hundred fifty thousand, six hundred twenty-five".