2117157425 has 12 divisors (see below), whose sum is σ = 2626134000. Its totient is φ = 1693171920.

The previous prime is 2117157409. The next prime is 2117157433. The reversal of 2117157425 is 5247517112.

It is not a de Polignac number, because 2117157425 - 2⁴ = 2117157409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75374 + ... + 99576.

It is an arithmetic number, because the mean of its divisors is an integer number (218844500).

Almost surely, 2^2117157425 is an apocalyptic number.

2117157425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2117157425 is a deficient number, since it is larger than the sum of its proper divisors (508976575).

2117157425 is a wasteful number, since it uses less digits than its factorization.

2117157425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27712 (or 27707 counting only the distinct ones).

The product of its digits is 19600, while the sum is 35.

The square root of 2117157425 is about 46012.5789866206. The cubic root of 2117157425 is about 1284.0572402367.

The spelling of 2117157425 in words is "two billion, one hundred seventeen million, one hundred fifty-seven thousand, four hundred twenty-five".