615231603420425 has 48 divisors (see below), whose sum is σ = 785052647425200. Its totient is φ = 477937912872960.

The previous prime is 615231603420389. The next prime is 615231603420437. The reversal of 615231603420425 is 524024306132516.

It can be written as a sum of positive squares in 24 ways, for example, as 87776212258816 + 527455391161609 = 9368896^2 + 22966397^2 .

It is not a de Polignac number, because 615231603420425 - 2¹² = 615231603416329 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2250581651 + ... + 2250854999.

It is an arithmetic number, because the mean of its divisors is an integer number (16355263488025).

Almost surely, 2^{615231603420425} is an apocalyptic number.

It is an amenable number.

615231603420425 is a deficient number, since it is larger than the sum of its proper divisors (169821044004775).

615231603420425 is a wasteful number, since it uses less digits than its factorization.

615231603420425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278190 (or 278185 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 615231603420425 in words is "six hundred fifteen trillion, two hundred thirty-one billion, six hundred three million, four hundred twenty thousand, four hundred twenty-five".