159705401625 has 352 divisors, whose sum is σ = 374064327936. Its totient is φ = 66134880000.

The previous prime is 159705401623. The next prime is 159705401627. The reversal of 159705401625 is 526104507951.

It is a happy number.

159705401625 is a `hidden beast` number, since 1 + 5 + 9 + 70 + 540 + 16 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (159705401623) and next prime (159705401627).

It is not a de Polignac number, because 159705401625 - 2¹ = 159705401623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (159705401623) by changing a digit.

It is a polite number, since it can be written in 351 ways as a sum of consecutive naturals, for example, 568346485 + ... + 568346765.

Almost surely, 2^159705401625 is an apocalyptic number.

159705401625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159705401625 is an abundant number, since it is smaller than the sum of its proper divisors (214358926311).

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

159705401625 is an frugal number, since it uses more digits than its factorization.

159705401625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 159705401625 in words is "one hundred fifty-nine billion, seven hundred five million, four hundred one thousand, six hundred twenty-five".