20346515425425 has 48 divisors (see below), whose sum is σ = 38445905748992. Its totient is φ = 9301099579200.

The previous prime is 20346515425363. The next prime is 20346515425531. The reversal of 20346515425425 is 52452451564302.

It is not a de Polignac number, because 20346515425425 - 2⁶ = 20346515425361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32306892 + ... + 32930658.

Almost surely, 2^{20346515425425} is an apocalyptic number.

20346515425425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20346515425425 is a deficient number, since it is larger than the sum of its proper divisors (18099390323567).

20346515425425 is a wasteful number, since it uses less digits than its factorization.

20346515425425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685918 (or 685913 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 48.

Adding to 20346515425425 its reverse (52452451564302), we get a palindrome (72798966989727).

The spelling of 20346515425425 in words is "twenty trillion, three hundred forty-six billion, five hundred fifteen million, four hundred twenty-five thousand, four hundred twenty-five".