215415025425 has 96 divisors (see below), whose sum is σ = 409961260800. Its totient is φ = 110766458880.

The previous prime is 215415025393. The next prime is 215415025447. The reversal of 215415025425 is 524520514512.

215415025425 is a `hidden beast` number, since 2 + 1 + 541 + 50 + 25 + 42 + 5 = 666.

It is not a de Polignac number, because 215415025425 - 2⁵ = 215415025393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215415025425.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14223457 + ... + 14238593.

It is an arithmetic number, because the mean of its divisors is an integer number (4270429800).

Almost surely, 2^215415025425 is an apocalyptic number.

215415025425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215415025425 is a deficient number, since it is larger than the sum of its proper divisors (194546235375).

215415025425 is a wasteful number, since it uses less digits than its factorization.

215415025425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15912 (or 15901 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

Adding to 215415025425 its reverse (524520514512), we get a palindrome (739935539937).

The spelling of 215415025425 in words is "two hundred fifteen billion, four hundred fifteen million, twenty-five thousand, four hundred twenty-five".